Out-of-bounds Read in Rust-openssl
CVE-2026-41677
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value lar…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (36.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Rust-openssl — versions >= 0.9.0, < 0.10.78
- Rust-openssl_project Rust-openssl
Weakness classification (CWE)
References
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-xmgf-hq76-4vx2 (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-41677?
- CVE-2026-41677 is a critical-severity vulnerability in Rust-openssl, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2026-04-24.
- How severe is CVE-2026-41677?
- Critical severity. CVSS v3 base score is 9.1 out of 10.