SB2026051894 - Out-of-bounds write in rust-openssl
Published: May 18, 2026
Security Bulletin ID
SB2026051894
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-45784)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause heap corruption.
The vulnerability exists due to out-of-bounds write in CipherCtxRef::cipher_update_inplace when processing non-multiple-of-8 input with AES-KW-PAD ciphers. A remote attacker can provide attacker-influenced plaintext lengths to cause heap corruption.
Only users of AES key-wrap-with-padding ciphers are affected.
Remediation
Install update from vendor's website.