CVE-2022-43705

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-27 · updated 2026-06-17
Weakness: CWE-295

Description

In Botan before 2.19.3, it is possible to forge OCSP responses due to a certificate verification error. This issue was introduced in Botan 1.11.34 (November 2016).

Affected products

randombit botan: from 1.11.34 before 2.19.3 — fixed in 2.19.3

How to fix

Upgrade to a fixed version: randombit botan 2.19.3. Check the vendor advisory for mitigations.

References

https://github.com/randombit/botan/releases/tag/2.19.3
https://github.com/randombit/botan/security/advisories/GHSA-4v9w-qvcq-6q7w
https://github.com/randombit/botan/releases/tag/2.19.3
https://github.com/randombit/botan/security/advisories/GHSA-4v9w-qvcq-6q7w

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