Cyber Resilience

CVE-2021-38185

HighPublic PoC

Published: 08 August 2021

Published
08 August 2021
Modified
09 June 2025
KEV Added
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Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.2633 96.4th percentile
Risk Priority 31 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-38185 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Gnu Cpio. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 3.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

GNU cpio through 2.13 allows attackers to execute arbitrary code via a crafted pattern file, because of a dstring.c ds_fgetstr integer overflow that triggers an out-of-bounds heap write. NOTE: it is unclear whether there are common cases where the pattern…

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file, associated with the -E option, is untrusted data.

CWE(s)
CWE-190

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

gnu
cpio
≤ 2.13

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References