Home/CVE/The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when convertin
CVE

CVE-2026-4046

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when convertin

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.

HIGH · CVSS 7.5 EPSS 0.0008
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

1
gnu glibc<= 2.43
⚠

Public Exploits & PoCs

1
pocsourceware.org · show_bug.cgi?id=33980sourceware.org
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · 3ff69d7a-14f2-4f67-a097-88dee7810d18
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Mar 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

15
suse-csafopenSUSE-SU-2026:20764-1
suse-csafSUSE-SU-2026:21682-1
suse-csafopenSUSE-SU-2026:10722-1
suse-csafSUSE-SU-2026:1662-1
rhsaRHSA-2026:12740Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://inbox.sourceware.org/libc-announce/76814edf-cf7f-47ec-979d-2dce0a2c76bf@gotplt.org/T/#u
https://sourceware.org/git/?p=glibc.gitThird Party Advisory
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