CVE-2026-45784CWE-131CWE-787

rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers

Medium · published July 17, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
2.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00134 · 2.6th percentile
Weaknesses
CWE-131 · Incorrect Calculation of Buffer Size; CWE-787 · Out-of-bounds Write
Published
2026-07-17T20:26Z
EPSS history
Timeline
  • 17 JUL 20:26Z
    rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers
    cvelistv5