CVE-2026-41681

EUVD-2026-25586
rust-openssl provides OpenSSL bindings for the Rust programming language.  From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_size(ctx) to the out buffer. If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack. This is reachable from safe Rust. This vulnerability is fixed in 0.10.78.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 19%
Affected Products (NVD)
VendorProductVersion
rust-openssl_projectrust-openssl
0.10.39 ≤
𝑥
< 0.10.78
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe
https://github.com/rust-openssl/rust-openssl/pull/2608
https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj