Out-of-bounds Read Affecting botan3 package, versions <3.13.0+dfsg-2
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-DEBIAN14-BOTAN3-22107202
- published1 Nov 2026
- disclosed29 Oct 2026
Introduced: 29 Oct 2026
NewCVE-2026-118769 (opens in a new tab)How to fix?
Upgrade Debian:14 botan3 to version 3.13.0+dfsg-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream botan3 package and not the botan3 package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
Botan is a C++ cryptography library. From 2.1.0 until 3.13.0, the Botan C API function botan_block_cipher_block_size converted a size_t block size to int without a bounds check. In an application that accepts external algorithm parameter strings and uses the FFI raw ECB mode, an attacker can select the variable-block-size Lion cipher so that the reported size is truncated, the caller allocates insufficient memory, and later block processing causes memory corruption. The C++ API and normally used C API modes such as CBC and CTR are unaffected. This issue is fixed in version 3.13.0.