CVE-2026-45784
For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.
- CVSS 4.0
- 5.1 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-131, CWE-787
- Affected
- sfackler/openssl
- Source
- security-advisories@github.com
References
- https://github.com/rust-openssl/rust-openssl/commit/19eceb26f2404aae187e5444e65c404ebc1348a7Patch
- https://github.com/rust-openssl/rust-openssl/pull/2638Issue Tracking, Patch
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.80Product, Release Notes
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-phqj-4mhp-q6mqVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.