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CVE-2020-29573

24
FAUCET Score

CVE-2020-29573 is a stack-based buffer overflow vulnerability in the GNU C Library (glibc) affecting x86 targets, specifically in versions prior to 2.23. It occurs when printf family functions process 80-bit long double inputs with non-canonical bit patterns. This vulnerability impacts products from vendors like GNU, NetApp, and Red Hat. Rated with a CVSS score of 7.5 (HIGH), the vulnerability has a network attack vector and low attack complexity, potentially leading to high availability impact. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. The vulnerability has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.23CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*

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
2.77%
Probability of exploitation in next 30 days
EPSS Percentile
84.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0277 is in the 73rd percentile among its peer group of 51,551 CVEs.

Social Chatter

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 (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-322.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: glibc-0:2.17-196.el7_4.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: glibc-0:2.17-196.el7_4.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: glibc-0:2.17-196.el7_4.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)Fixed in: glibc-0:2.17-260.el7_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Telco Extended Update SupportFixed in: glibc-0:2.17-260.el7_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Update Services for SAP SolutionsFixed in: glibc-0:2.17-260.el7_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: glibc-0:2.17-292.el7_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift DoFixed in: openshiftdo/odo-init-image-rhel7:1.1.3-2
View patch

Vendor Advisories (1)

redhatCVE-2020-29573Moderate

glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern

Sep 22, 2020

References

security.gentoo.org / glsa/202101-20
Third Party Advisory
security.netapp.com / advisory/ntap-20210122-0004
Third Party Advisory
sourceware.org / bugzilla/show_bug.cgi
Issue TrackingPatchThird Party Advisory
sourceware.org / pipermail/libc-alpha/2020-September/117779.html
PatchThird Party Advisory