# CVE-2022-43705: botan: In Botan before 2.19.3, it is possible to forge OCSP responses due to a certificate verification error

CVE-2022-43705 is fixed in botan on 1 platform, first by DEBIAN-CVE-2022-43705, released November 27, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2022-43705
- Priority: Urgent
- CVSS: 9.1 (critical)
- EPSS: 0.0046
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 27, 2022

## 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).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | botan Debian 12.15 (bookworm) | 2.19.3+dfsg-1 | [DEBIAN-CVE-2022-43705](https://patchblox.com/security/data/fix/linux/debian-cve-2022-43705.md) | Nov 27, 2022 |
| Linux | botan Debian 13.5 (trixie) | 2.19.3+dfsg-1 | [DEBIAN-CVE-2022-43705](https://patchblox.com/security/data/fix/linux/debian-cve-2022-43705.md) | Nov 27, 2022 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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