CVE-2020-21047

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2023-08-22

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• elfutils_project:elfutils

References

• https://lists.debian.org/debian-lts-announce/2023/09/msg00026.html
• https://sourceware.org/bugzilla/show_bug.cgi?id=25068
• https://sourceware.org/git/?p=elfutils.git%3Ba=commitdiff%3Bh=99dc63b10b3878616b85df2dfd2e4e7103e414b8
• https://lists.debian.org/debian-lts-announce/2023/09/msg00026.html
• https://sourceware.org/bugzilla/show_bug.cgi?id=25068

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