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CVE-2015-6674

24
FAUCET Score

CVE-2015-6674 is a critical buffer underflow vulnerability affecting the Debian inspircd package, specifically versions before 2.0.5-1+deb7u1 for wheezy and before 2.0.16-1 for jessie and sid. This flaw, a recurrence of an incomplete fix for CVE-2012-1836, allows for unauthenticated remote exploitation with high impact on confidentiality, integrity, and availability, as indicated by its CVSS v3 score of 9.8. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code in common frameworks like Metasploit or ExploitDB, nor significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.19CPE matchmatch criteria
cpe:2.3:a:inspircd:inspircd:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.27%
Probability of exploitation in next 30 days
EPSS Percentile
81.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0227 is in the 71st percentile among its peer group of 36,833 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.debian.org / cgi-bin/bugreport.cgi
PatchThird Party Advisory
security.gentoo.org / glsa/201512-13
Third Party AdvisoryVDB Entry
debian.org / security/2015/dsa-3226
Third Party Advisory