CVE-2021-20294

A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.

• CWE-787
• CWE-787

• https://bugzilla.redhat.com/show_bug.cgi?id=1943533Issue Tracking, Third Party Advisory
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://security.gentoo.org/glsa/202208-30Third Party Advisory
• https://sourceware.org/bugzilla/show_bug.cgi?id=26929Exploit, Issue Tracking, Patch, Third Party Advisory
• https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926
• https://bugzilla.redhat.com/show_bug.cgi?id=1943533Issue Tracking, Third Party Advisory
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://security.gentoo.org/glsa/202208-30Third Party Advisory
• https://sourceware.org/bugzilla/show_bug.cgi?id=26929Exploit, Issue Tracking, Patch, Third Party Advisory
• https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926

Published

Apr 29, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-20289A flaw was found in RESTEasy in all versions of RESTEasy up …5.3
• CVE-2021-2029Vulnerability in the Oracle Scripting product of Oracle E-Bu…9.8
• CVE-2021-20290An improper authorization handling flaw was found in Foreman…6.1
• CVE-2021-20291A deadlock vulnerability was found in 'github.com/containers…6.5
• CVE-2021-20292There is a flaw reported in the Linux kernel in versions bef…6.7
• CVE-2021-20293A reflected Cross-Site Scripting (XSS) flaw was found in RES…6.1
• CVE-2021-20295It was discovered that the update for the virt:rhel module i…6.5
• CVE-2021-20296A flaw was found in OpenEXR in versions before 3.0.0-beta. A…5.3
• CVE-2021-20297A flaw was found in NetworkManager in versions before 1.30.0…5.5
• CVE-2021-20298A flaw was found in OpenEXR's B44Compressor. This flaw allow…7.5
• CVE-2021-20299A flaw was found in OpenEXR's Multipart input file functiona…7.5
• CVE-2021-2030Vulnerability in the MySQL Server product of Oracle MySQL (c…4.9