Out-of-bounds Read Affecting openssl package, versions [1.0.2u,3.1.0)
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-17277461
- published10 Jun 2026
- disclosed9 Jun 2026
- creditFrank Buss
Introduced: 9 Jun 2026
NewCVE-2026-34180 (opens in a new tab)How to fix?
Upgrade openssl to version 3.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the ASN.1 decoder. An attacker can crash the application or cause memory beyond the end of the input buffer to be loaded into the decoded ASN.1 object, by supplying very large input data. Applications that pass untrusted input to d2i_X509(), d2i_PKCS7(), or other d2i_* functions are affected. OpenSSL command line tools are not.
Note: Only 64-bit Unix-like systems are vulnerable.