9.1

CVE-2022-43705: botan_project botan Improper Certificate Validation

CVSS: 9.1v3.1CriticalModified
AliasesMGASA-2022-0445openSUSE-SU-2022:10210-1openSUSE-SU-2022:10211-1
Published 27-11-2022Last modified 25-04-2025
Open JSON

Vulnerability summary

CVE-2022-43705 is a critical (CVSS 9.1) Improper Certificate Validation vulnerability in botan_project botan. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 38% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-11-2022
    PublishedVulnerability first disclosed.
  2. 25-04-2025
    Last modifiedVulnerability information updated.

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).

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.02 pp

From 0.43% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opensuse3 products
  • Botan&distro=openSUSE Leap 15.3< 2.10.0-bp153.3.3.1
  • Botan&distro=openSUSE Leap 15.4< 2.18.2-bp154.2.3.1
  • Botan&distro=openSUSE Tumbleweed< 2.19.3-1.1
Suse2 products
  • Botan&distro=SUSE Package Hub 15 SP3< 2.10.0-bp153.3.3.1
  • Botan&distro=SUSE Package Hub 15 SP4< 2.18.2-bp154.2.3.1
Botan_project1 product
  • botan≥ 1.11.34, < 2.19.3
Debian1 product
  • botan< 2.19.3+dfsg-1
Mageia1 product
  • botan2< 2.17.3-2.2.mga8
Ubuntu1 product
  • botanAll versions (No fix recorded)

6 vendors · 9 products

References

20 links
Show all 20 references