{"id":"CVE-2026-41681","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-41681","generatedAt":"2026-10-28T03:39:05.791Z","title":"If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack.","description":"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.","published":"2026-04-24T18:16:30.000Z","lastModified":"2026-07-15T16:51:49.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.1,"severity":"HIGH","vector":"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/M"},"cwe":["CWE-121"],"affected":["rust-openssl project/rust-openssl"],"epss":{"score":0.00359,"percentile":0.29508,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/rust-openssl/rust-openssl/pull/2608","tags":["Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-41681","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}