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CVE-2026-6042

musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity

Published: Apr 10, 2026Updated: Apr 24, 2026 Sources: CVE List NVDCWE-404
NVD MITRE
3.3CVSSLOW
EPSS Score
0.2%
Top 86.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity. The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-404CWE-407

Affected Products

libcmusl
Library
OSS Libraries / generic-library
musloss-projectOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://vuldb.com/vuln/356620
vuldb.com
https://vuldb.com/vuln/356620/cti
vuldb.com
https://vuldb.com/submit/796352
vuldb.com
and 3 more references View all →

Timeline

Published
Apr 10, 2026
Last Updated
Apr 24, 2026

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