CVE-2023-53159

low-risk
Published 2025-07-28

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

Do I need to act?

-
0.07% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.5/10 Medium
LOCAL / HIGH complexity

Affected Products (1)

Openssl

Affected Vendors

Sfackler

References (3)

Product https://crates.io/crates/openssl
Exploit https://github.com/sfackler/rust-openssl/issues/1965
Third Party Advisory https://rustsec.org/advisories/RUSTSEC-2023-0044.html
17
/ 100
low-risk
Severity 12/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal