CVE-2026-45784

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.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-07-17 21:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-07-29 15:43 UTC Last updatedMost recent change to the record

Details

Published

2026-07-17 21:17 UTC

Last modified

2026-07-29 15:43 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-131

Record status

Analyzed

Affected

• Sfackler OpenSSL < 0.10.80

Attack profile CVSS 4.0 · 5.1

Attack vector

Local

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

Low

Availability

Low