Cyber Resilience

CVE-2023-53159

MediumPublic PoC

Published: 28 July 2025

Published
28 July 2025
Modified
07 August 2025
KEV Added
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Patch
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CVSS Score v3.1 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L
EPSS Score 0.0024 46.7th percentile
Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-53159 is a medium-severity Buffer Over-read (CWE-126) vulnerability in Sfackler Openssl. Its CVSS base score is 4.5 (Medium).

Operationally, ranked at the 46.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

The openssl crate before 0.10.55 for Rust allows an out-of-bounds read via an empty string to X509VerifyParamRef::set_host.

CWE(s)
CWE-126

Related Threats

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

Affected Assets

sfackler
openssl
≤ 0.10.55

Mitigating Controls

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

References