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Vulnerabilities

Vulnerability · CVE-2026-45784

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

Published May 19, 2026 · catalog updated Nov 10, 2026 · rust-openssl: Potential out-of-bounds write

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-45784. EPSS is 0.13%. Act only if a listed version of rust-openssl: Potential out-of-bounds write is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (rust-openssl: Potential out-of-bounds write).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Advisory link
Affected products
crates.io openssl

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 method was missed in the fix for GHSA-xv59-967r-8726

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • crates.io openssl0.10.50 → 0.10.80

How to fix CVE-2026-45784

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-45784. EPSS is 0.13%. Act only if a listed version of rust-openssl: Potential out-of-bounds write is installed.

Which versions are affected?

Compare what you have installed with 0.10.50 → 0.10.80. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-131; CWE-787: Out-of-bounds Write. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

OpenSSL security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 19, 2026 · GitHub Advisory Database

    Detected

    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 method was m

  2. Nov 10, 2026 · GitHub Advisory Database

    Fix available

    openssl fixed in 0.10.80

  3. Nov 10, 2026 · GitHub Advisory Database

    Fix available

    openssl fixed in 0.10.80

  4. Nov 10, 2026 · GitHub Advisory Database

    Updated

    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 method was m

Sources

  • CVE.orgVulnerability recordCVE-2026-45784

    Official CVE identifier

    cve.org
  • GitHub Advisory DatabasePackage advisoryGHSA-phqj-4mhp-q6mq

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-phqj-4mhp-q6mq

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

    osv.dev
  • RustSec Advisory DBVendor advisoryCVE-2026-45784

    had the same sizing error that 0.10.79 fixed in (GHSA-xv59-967r-8726); that fix missed this method. It required room for bytes, but with the AES key-wrap-with-padding ciphers OpenSSL writes up to 7 more bytes when is not a multiple of 8, past the end of . Only users of the AES ke

    crates.io

References

Freshness

Last verified in this catalog Nov 10, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • RustSec Advisory DBNov 12, 2026
  • GitHub Advisory DatabaseNov 11, 2026
  • OpenSSF OSV / OSV ScannerNov 11, 2026
  • CVE.orgNov 10, 2026