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CVE-2020-12723

21
FAUCET Score

CVE-2020-12723 is a buffer overflow vulnerability in regcomp.c of Perl versions prior to 5.30.3, stemming from recursive S_study_chunk calls when processing crafted regular expressions. This flaw primarily impacts products like Fedora, NetApp, OpenSUSE, Oracle, and Perl itself. With a CVSS score of 7.5 (HIGH), it presents a network-exploitable, low-complexity attack vector that could lead to high availability impact, though confidentiality and integrity are not directly affected. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.30.3CPE matchmatch criteria
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:snap_creator_framework:-:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.97%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0597 is in the 87th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

github_advisorypatch availablevia nvd_reference
View patch
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: perl-4:5.16.3-299.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: perl-4:5.16.3-292.el7_4.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: perl-4:5.16.3-292.el7_4.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: perl-4:5.16.3-292.el7_4.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: perl-4:5.16.3-294.el7_6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: perl-4:5.16.3-294.el7_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: perl-4:5.26.3-417.el8_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: perl-4:5.26.3-417.el8_2
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: perl:5.24/perl

Vendor Advisories (1)

redhatCVE-2020-12723Moderate

perl: corruption of intermediate language state of compiled regular expression due to recursive S_study_chunk() calls leads to DoS

Jun 2, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-06/msg00044.html
Mailing ListThird Party Advisory
github.com / Perl/perl5/blob/blead/pod/perl5303delta.pod
Third Party Advisory
github.com / perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a
PatchThird Party Advisory
github.com / Perl/perl5/compare/v5.30.2...v5.30.3
PatchThird Party Advisory
github.com / Perl/perl5/issues/16947
Third Party Advisory
github.com / Perl/perl5/issues/17743
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/IN3TTBO5KSGWE5IRIKDJ5JSQRH7ANNXE
security.gentoo.org / glsa/202006-03
Third Party Advisory
security.netapp.com / advisory/ntap-20200611-0001
Third Party Advisory
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
oracle.com / /security-alerts/cpujul2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2020.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory