CVE-2026-45784

MEDIUMPre-NVD 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

CipherCtxRef::cipher_update_inplace 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

CVSS v3
—
EG Score
0.0(none)
EPSS
5.3%
KEV
Not listed

Published

May 19, 2026

Last Modified

May 19, 2026

Vendor Advisories for CVE-2026-45784(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
crates.io(1)
PackageVulnerable rangeFixed inDependents
openssl—0.10.80—

Data Freshness Timeline

(refreshed 0× in last 7d / 4× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-06-14 23:18 UTCEPSS rescore
  2. 2026-06-13 23:44 UTCEG score recompute
  3. 2026-06-13 23:00 UTCEPSS rescore
  4. 2026-06-12 23:12 UTCEPSS rescore
  5. 2026-05-24 06:13 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-45784?
CVE-2026-45784 is a medium vulnerability published on May 19, 2026. rust-openssl: Potential out-of-bounds write in CipherCtxRef::cipherupdateinplace for AES-KW-PAD ciphers CipherCtxRef::cipherupdateinplace incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVPaes{128,192,256}wrappad). For a non-multiple-of-8 input, OpenSSL writes up…
When was CVE-2026-45784 disclosed?
CVE-2026-45784 was first published in the National Vulnerability Database on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45784 actively exploited?
CVE-2026-45784 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-45784?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45784, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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