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TI-2026-32562 Aliases CVE-2026-44662GHSA-xv59-967r-8726

rust-openssl: Heap buffer overflow when encrypting with AES key-wrap-with-padding

Priority LOW 30CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00172 6th percentileScored 2026-11-07
Fix Fixed rust-openssl (rust-openssl): 0.10.79openssl (crates.io): 0.10.79

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rust-opensslrust-openssl0.10.0 to before 0.10.790.10.79Patch availableCNA
—openssl (crates.io)0.10.0 to before 0.10.790.10.79Patch availableGHSA-xv59-967r-8726
  • rust-openssl Vendorrust-openssl Affected 0.10.0 to before 0.10.79 Fixed in 0.10.79 Patch available CNA
  • openssl (crates.io) Vendor— Affected 0.10.0 to before 0.10.79 Fixed in 0.10.79 Patch available GHSA-xv59-967r-8726

Remediation

  • Fix · CNA rust-openssl (rust-openssl) Fixed in 0.10.79
  • Fix · GHSA-xv59-967r-8726 openssl (crates.io) Fixed in 0.10.79 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44662
  2. 2026-10-03 Alias added: GHSA-xv59-967r-8726

References

Advisory 1

Other 2

  • TI-2018-14959 An issue was discovered in the openssl crate before 0.10.9 for Rust. CVSS 3.0CRITICAL 9.8
  • TI-2026-30633 rust-openssl: undefined behavior in X509Ref::ocsp_responders for certificates with non-UTF-8 OCSP URLs CVSS 4.0HIGH 8.7
  • TI-2026-30198 rust-openssl: MdCtxRef::digest_final() writes past caller buffer with no length check CVSS 4.0HIGH 8.1
  • TI-2026-30193 rust-openssl: Deriver::derive and PkeyCtxRef::derive can overflow short buffers on OpenSSL 1.1.1 CVSS 4.0HIGH 7.2
  • TI-2016-08969 An issue was discovered in the openssl crate before 0.9.0 for Rust. CVSS 3.0HIGH 8.1
  • TI-2026-30300 rust-openssl: Unchecked callback-returned length in PSK and cookie generate trampolines… CVSS 4.0HIGH 8.3
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences