HOMEVULNERABILITIESCVE-2015-7826
CRITICAL

CVE-2015-7826

CWE-295Published: April 10, 2017· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2015-7826 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

botan_project1 product(s)
botan
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://botan.randombit.net/security.html#id3
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1311620
ADVISORYhttps://botan.randombit.net/security.html#id3
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1311620

All References (4)

→
https://botan.randombit.net/security.html#id3Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1311620Issue Tracking · Third Party Advisory · VDB Entry
→
https://botan.randombit.net/security.html#id3Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1311620Issue Tracking · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2015-7826
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-295
CISA KEVNo
Affected1 vendor(s)
PublishedApr 10, 2017

Related CVEs (CWE-295)

CVE-2026-4370
10.0
CVE-2022-22885
9.8
CVE-2025-36041
9.8
CVE-2025-6433
9.8
CVE-2026-9258
9.8
CVE-2021-29656
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2015-7826 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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