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CVE-2009-2658

20
FAUCET Score

CVE-2009-2658 describes a directory traversal vulnerability in ZNC versions prior to 0.072. This flaw allows unauthenticated remote attackers to overwrite arbitrary files on affected systems by sending a specially crafted DCC SEND request. The vulnerability carries a CVSS score of 7.5, indicating high severity with low attack complexity and potential for partial confidentiality, integrity, and availability impact. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations using vulnerable ZNC versions should prioritize patching.

Impacted Technologies

VendorProductVersion(s)CPE
0.044CPE matchmatch criteria
cpe:2.3:a:znc:znc:0.044:*:*:*:*:*:*:*
0.045CPE matchmatch criteria
cpe:2.3:a:znc:znc:0.045:*:*:*:*:*:*:*
0.047CPE matchmatch criteria
cpe:2.3:a:znc:znc:0.047:*:*:*:*:*:*:*
0.052CPE matchmatch criteria
cpe:2.3:a:znc:znc:0.052:*:*:*:*:*:*:*
0.054CPE matchmatch criteria
cpe:2.3:a:znc:znc:0.054:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.92%
Probability of exploitation in next 30 days
EPSS Percentile
85.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0292 is in the 74th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

en.znc.in / wiki/ChangeLog/0.072
PatchVendor Advisory
en.znc.in / w/index.php
secunia.com / advisories/35916
Vendor Advisory
redhat.com / archives/fedora-package-announce/2009-July/msg00965.html
debian.org / security/2009/dsa-1848
openwall.com / lists/oss-security/2009/07/21/5
znc.svn.sourceforge.net / viewvc/znc