Cyber Resilience

CVE-2021-42056

MediumPublic PoC

Published: 24 June 2022

Published
24 June 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0234 85.2th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42056 is a medium-severity Link Following (CWE-59) vulnerability in Thalesgroup Safenet Authentication Client. Its CVSS base score is 6.7 (Medium).

Operationally, ranked in the top 14.8% 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

Thales Safenet Authentication Client (SAC) for Linux and Windows through 10.7.7 creates insecure temporary hid and lock files allowing a local attacker, through a symlink attack, to overwrite arbitrary files, and potentially achieve arbitrary command execution with high privileges.

CWE(s)
CWE-59

Related Threats

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

Affected Assets

thalesgroup
safenet authentication client
≤ 10.7.7

Mitigating Controls

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

References