Improper Validation of Specified Quantity in Input Affecting openssl package, versions [1.1.1q,3.4.8)[3.5.0,3.5.9)[3.6.0,3.6.5)[4.0.1,4.0.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-OPENSSL-20536999
- published6 Oct 2026
- disclosed29 Sept 2026
- creditMounir Idrassi
Introduced: 29 Sep 2026
NewCVE-2026-75806 (opens in a new tab)How to fix?
Upgrade openssl to version 3.4.8, 3.5.9, 3.6.5, 4.0.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input in the DTLS 1.2 record layer, which passes the record length to the cipher before checking that it covers the explicit IV and authentication tag, so an undersized record raises a fatal internal_error rather than an authentication failure. An attacker can tear down an established DTLS association without holding any key, by routing one undersized AEAD record to it. This requires knowledge of an existing association to route the datagram to, and the effect is limited to that association.