Description
Botan is a C++ cryptography library. From 3.7.0 until 3.13.0, an application that calls AutoSeeded_RNG::clear() and then calls randomize with an empty output buffer while the generator is unseeded can cause AutoSeeded_RNG to mark itself seeded without consulting the configured entropy source. On builds without BOTAN_HAS_SYSTEM_RNG, the fallback uses only a clock value and process ID, so a later non-empty request can produce output from predictable state. This issue is fixed in version 3.13.0.
Published: 2026-10-29
Score: 7.3 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Thu, 29 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 29 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Randombit
Randombit botan
Vendors & Products Randombit
Randombit botan

Thu, 29 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description Botan is a C++ cryptography library. From 3.7.0 until 3.13.0, an application that calls AutoSeeded_RNG::clear() and then calls randomize with an empty output buffer while the generator is unseeded can cause AutoSeeded_RNG to mark itself seeded without consulting the configured entropy source. On builds without BOTAN_HAS_SYSTEM_RNG, the fallback uses only a clock value and process ID, so a later non-empty request can produce output from predictable state. This issue is fixed in version 3.13.0.
Title Botan: AutoSeeded_RNG can become reinitialized from predictable data after clearing state
Weaknesses CWE-335
References
Metrics cvssV4_0

{'score': 7.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-29T20:19:55.406Z

Reserved: 2026-10-28T19:20:05.017Z

Link: CVE-2026-118765

cve-icon Vulnrichment

Updated: 2026-10-29T20:19:49.768Z

cve-icon NVD

Status : Received

Published: 2026-10-29T17:18:07.523

Modified: 2026-10-29T21:17:16.967

Link: CVE-2026-118765

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T19:30:15Z

Weaknesses