CVE-2015-6674

Buffer underflow vulnerability in the Debian inspircd package before 2.0.5-1+deb7u1 for wheezy...

9.8 CriticalFix available

Buffer underflow vulnerability in the Debian inspircd package before 2.0.5-1+deb7u1 for wheezy and before 2.0.16-1 for jessie and sid. NOTE: This issue exists as an additional issue from an incomplete fix of CVE-2012-1836.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.27%Up 1.3 points since Feb 4, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2015-6674
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-6674
Updated: 2026-11-02

EUVDEUVD-2015-6612 No score

Record: EUVD-2015-6612
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4466-cv44-w3q7 9.8

Buffer underflow vulnerability in the Debian inspircd package before 2.0.5-1+deb7u1 for wheezy...

Record: GHSA-4466-cv44-w3q7
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 9.8

Record: CVE-2015-6674
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-6674 9.8

Record: DEBIAN-CVE-2015-6674
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-6674 9.8

Record: UBUNTU-CVE-2015-6674
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`inspircd` Debian:12	before 2.0.16-1	2.0.16-1
`inspircd` Debian:13	before 2.0.16-1	2.0.16-1
`inspircd` Debian:6.0 From an advisory covering 3 CVEs	before 1.1.22+dfsg-4+squeeze2, plus listed versions 1.1.22+dfsg-41.1.22+dfsg-4+squeeze1	1.1.22+dfsg-4+squeeze2
`inspircd` Debian:7 From an advisory covering 3 CVEs	before 2.0.5-1+deb7u1, plus listed versions 2.0.5-1	2.0.5-1+deb7u1
`inspircd` Ubuntu:14.04:LTS	before 2.0.5-1+deb7u1build0.14.04.1, plus listed versions 2.0.5-1	2.0.5-1+deb7u1build0.14.04.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-6674 is a critical vulnerability (CVSS 9.8) in Inspircd, published April 15, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.27%, the 83rd percentile. Fixed in inspircd 2.0.16-1.