HOMEVULNERABILITIESCVE-2020-10029
MEDIUM

CVE-2020-10029

CWE-787Published: March 4, 2020· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.

NVD Source

Technical Analysis

CVE-2020-10029 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
gnu1 product(s)
glibc
netapp7 product(s)
active iq unified managercloud backuphci management nodesolidfiresteelstore cloud integrated storageh410c firmwareh410c
openSUSE1 product(s)
leap
Source: NVD CPE · 16 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
ADVISORYhttps://security.gentoo.org/glsa/202006-04
ADVISORYhttps://security.netapp.com/advisory/ntap-20200327-0003/
ADVISORYhttps://sourceware.org/bugzilla/show_bug.cgi?id=25487
ADVISORYhttps://usn.ubuntu.com/4416-1/
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
ADVISORYhttps://security.gentoo.org/glsa/202006-04
ADVISORYhttps://security.netapp.com/advisory/ntap-20200327-0003/
ADVISORYhttps://sourceware.org/bugzilla/show_bug.cgi?id=25487
ADVISORYhttps://usn.ubuntu.com/4416-1/

All References (20)

→
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23N76M3EDP2GIW4GOIQRYTKRE7PPBRB2/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTFUD5VH2GU3YOXA2KBQSBIDZRDWNZ3/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU5JJGENOK7K4X5RYAA5PL647C6HD22E/
→
https://security.gentoo.org/glsa/202006-04Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200327-0003/Third Party Advisory
→
https://sourceware.org/bugzilla/show_bug.cgi?id=25487Exploit · Issue Tracking · Third Party Advisory
→
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=9333498794cde1d5cca518badf79533a24114b6f
→
https://usn.ubuntu.com/4416-1/Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23N76M3EDP2GIW4GOIQRYTKRE7PPBRB2/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTFUD5VH2GU3YOXA2KBQSBIDZRDWNZ3/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU5JJGENOK7K4X5RYAA5PL647C6HD22E/

Quick Facts

CVE IDCVE-2020-10029
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
Affected6 vendor(s)
PublishedMar 4, 2020

Related CVEs (CWE-787)

CVE-2012-3957
10.0
CVE-2016-9343
10.0
CVE-2026-42369
10.0
CVE-2012-0751
10.0
CVE-2014-1478
10.0
CVE-2018-6692
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-10029 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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