rust-openssl CVE-2026-41681
HIGH
GHSA-ghm9-cr32-g9qj
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
6DescriptionNVD
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.
AnalysisAI
Stack-based buffer overflow in rust-openssl's MdCtxRef::digest_final() allows safe Rust code to corrupt memory when EVP_DigestFinal() writes beyond the provided output buffer boundary. The vulnerability occurs when the output buffer is smaller than EVP_MD_CTX_size(ctx), causing EVP_DigestFinal() to write past the buffer end and corrupt stack memory. …
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RemediationAI
Within 24 hours: Identify all internal and third-party applications using rust-openssl by reviewing dependency manifests (Cargo.lock, Cargo.toml) and container images. Within 7 days: Update rust-openssl to version 0.10.78 or later (commit 826c3888) across all development, staging, and production environments; coordinate with development teams and re-run integration tests. …
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External POC / Exploit Code
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