CVE-2026-44662 Details
Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.0 to before 0.10.79, CipherCtxRef::cipher_update, CipherCtxRef::cipher_update_vec, and symm::Crypter::update 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 only impacts users using AES key-wrap-with-padding ciphers. This vulnerability is fixed in 0.10.79.
A heap buffer overflow vulnerability has been identified in rust-openssl versions 0.10.0 prior to 0.10.79. The issue arises in the OpenSSL bindings for Rust when the AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad) are used. The vulnerability occurs because the output buffers are incorrectly sized, allowing OpenSSL to write up to 7 bytes beyond the end of the caller's buffer or Vec. This creates a risk of heap corruption that can be controlled by an attacker, particularly when the length of the plaintext is influenced by the attacker.
Users can upgrade to rust-openssl version 0.10.79 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 14, 2026CISA-ADP
Assessed May 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-xv59-967r-8726 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| rust-openssl | >= 0.10.0 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | New CVE Received | [email protected] |