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CVE-2020-18032

25
FAUCET Score

CVE-2020-18032 describes a buffer overflow vulnerability in Graphviz Graph Visualization Tools, specifically in the "lib/common/shapes.c" component, affecting various Debian and Fedora Graphviz packages. This flaw allows remote attackers to achieve arbitrary code execution or a denial of service by tricking a user into loading a specially crafted file. With a CVSS score of 7.8 (High), it requires user interaction and local access for exploitation, but successful attacks could lead to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.46.0CPE matchmatch criteria
cpe:2.3:a:graphviz:graphviz:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.61%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0261 is in the 84th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (125)

microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 19106-17084Fixed in: 2.42.4-10
microsoftpatch availablevia msrc
Product: 19104-16820Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 19105-16823Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 18173-17084Fixed in: 2.42.4-10
microsoftpatch availablevia msrc
Product: 15079-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15080-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15081-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15082-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15083-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15084-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15085-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15086-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15087-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15088-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15089-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15090-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15091-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15092-12140Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15093-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15094-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15095-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15096-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15109-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15055-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15056-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15057-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15058-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15059-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15060-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15061-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15062-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15063-12137Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15064-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15065-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15066-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15067-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15068-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15069-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15070-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15071-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15072-12138Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: 15073-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15074-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15075-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15076-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15077-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15078-12139Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: 15097-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15098-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15099-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15100-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15101-12356Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15102-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15103-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15104-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15105-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15106-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15107-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15108-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: 15110-12357Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: azl3 graphviz 2.42.4-12 on Azure Linux 3.0Fixed in: 2.42.4-10
microsoftpatch availablevia msrc
Product: azl3 graphviz 2.42.4-10 on Azure Linux 3.0Fixed in: 2.42.4-10
microsoftpatch availablevia msrc
Product: cm1 graphviz 2.42.4-5 on CBL Mariner 1.0Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: cbl2 graphviz 2.42.4-6 on CBL Mariner 2.0Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-debuginfo-2.42.4-5.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-debuginfo-2.42.4-5.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 2.42.4-5
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-python3-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-debuginfo-2.42.4-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-python3-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-debuginfo-2.42.4-6.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 2.42.4-6
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-python3-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-tcl-2.42.4-11.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-devel-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-doc-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-gd-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-graphs-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-lua-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-perl-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
microsoftpatch availablevia msrc
Product: graphviz-python3-2.42.4-11.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 2.42.4-11
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: graphviz-0:2.40.1-43.el8
View patch

Vendor Advisories (4)

microsoft2024-Jun/CVE-2020-18032

CVE-2020-18032

Jun 11, 2024
microsoft2021-Sep/CVE-2020-18032

CVE-2020-18032

Sep 14, 2021
redhatCVE-2020-18032Moderate

graphviz: off-by-one in parse_reclbl() in lib/common/shapes.c

May 26, 2021
microsoft2021-Apr/CVE-2020-18032Important

Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted file into the "lib/common/shapes.c" component.

Apr 13, 2021

References

gitlab.com / graphviz/graphviz/-/issues/1700
ExploitPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2021/05/msg00014.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/D5PQPHJHPU46FK3R5XBP3XDT4X37HMPC
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/QGY2IGARE6RZHTF2UEZEWLMQCDILFK6A
security.gentoo.org / glsa/202107-04
Issue TrackingThird Party Advisory
debian.org / security/2021/dsa-4914
Third Party Advisory