CVE-2020-29562

The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

CVSS 3.1

4.8CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

EPSS

1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-25)

CWE

CWE-617

Published

2020-12-04

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• fedoraproject:fedora
• gnu:glibc
• netapp:e-series_santricity_os_controller

References

• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVCUNLQ3HXGS4VPUQKWTJGRAW2KTFGXS/
• https://security.gentoo.org/glsa/202101-20
• https://security.netapp.com/advisory/ntap-20210122-0004/
• https://sourceware.org/bugzilla/show_bug.cgi?id=26923

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