CVE-2009-2658

Directory traversal vulnerability in ZNC before 0.072 allows remote attackers to overwrite arbitrary files via a crafted DCC SEND request.

Published: 2009-08-04 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2658 is rated Moderate Risk (55.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.96%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-2658

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 1.90% 0.96% -0.94%
2 2025-03-29 0.96% 1.90% +0.94%
3 2025-03-17 — 0.96% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2658

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2009-2658

OS Trackers for CVE-2009-2658

vendor priority summary link
debian medium CVE-2009-2658 medium priority: Debian including 1 source packages (znc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-2658
gentoo normal CVE-2009-2658: 1 GLSA(s) (200909-17), 1 atom(s) (net-irc/znc); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-2658
ubuntu medium CVE-2009-2658 medium priority: Ubuntu including 1 source packages (znc), 10 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 4, not-affected 4, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2009-2658

Affected software / configurations for CVE-2009-2658

Vendor Product Version Raw CPE
znc znc 0.044 cpe:2.3:a:znc:znc:0.044:*:*:*:*:*:*:*
znc znc 0.045 cpe:2.3:a:znc:znc:0.045:*:*:*:*:*:*:*
znc znc 0.047 cpe:2.3:a:znc:znc:0.047:*:*:*:*:*:*:*
znc znc 0.052 cpe:2.3:a:znc:znc:0.052:*:*:*:*:*:*:*
znc znc 0.054 cpe:2.3:a:znc:znc:0.054:*:*:*:*:*:*:*
znc znc 0.056 cpe:2.3:a:znc:znc:0.056:*:*:*:*:*:*:*
znc znc 0.058 cpe:2.3:a:znc:znc:0.058:*:*:*:*:*:*:*
znc znc 0.060 cpe:2.3:a:znc:znc:0.060:*:*:*:*:*:*:*
znc znc 0.062 cpe:2.3:a:znc:znc:0.062:*:*:*:*:*:*:*
znc znc 0.064 cpe:2.3:a:znc:znc:0.064:*:*:*:*:*:*:*
znc znc 0.066 cpe:2.3:a:znc:znc:0.066:*:*:*:*:*:*:*
znc znc 0.068 cpe:2.3:a:znc:znc:0.068:*:*:*:*:*:*:*
znc znc 0.070 cpe:2.3:a:znc:znc:0.070:*:*:*:*:*:*:*

References for CVE-2009-2658

cvelogic Threat Intelligence