9.8

CVE-2015-7826: botan_project botan Improper Certificate Validation

CVSS: 9.8v3.0CriticalModified
Published 10-04-2017Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-7826 is a critical (CVSS 9.8) Improper Certificate Validation vulnerability in botan_project botan. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
1.11%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-04-2017
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

botan 1.11.x before 1.11.22 improperly handles wildcard matching against hostnames, which might allow remote attackers to have unspecified impact via a valid X.509 certificate, as demonstrated by accepting *.example.com as a match for bar.foo.example.com.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.11%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

+0.11 pp

From 1.00% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.11%

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

Botan_project1 product

1 vendor · 1 product

References

2 links