CVE-2007-3961

Off-by-one error in the fsp_readdir_r function in fsplib.c in fsplib before 0.9 allows remote attackers to cause a denial of service via a directory entry whose length is exactly MAXNAMELEN, which prevents a terminating null byte from being added.

Published: 2007-07-25 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-3961 is rated Moderate Risk (47.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.07%). 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-2007-3961

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 2026-06-15 1.90% 2.07% +0.17%
2 2026-03-13 1.85% 1.90% +0.05%
3 2025-08-19 — 1.85% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-3961

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2007-3961

OS Trackers for CVE-2007-3961

vendor priority summary link
gentoo normal CVE-2007-3961: 1 GLSA(s) (200711-01), 1 atom(s) (net-ftp/gftp); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-3961
redhat — — https://access.redhat.com/security/cve/CVE-2007-3961
ubuntu low CVE-2007-3961 low priority: Ubuntu including 1 source packages (gftp), 9 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): ignored 4, not-affected 4, needed 1. https://ubuntu.com/security/CVE-2007-3961

NVD evaluator notes for CVE-2007-3961

Solution: Vendor has supplied upgrade patch: http://sourceforge.net/project/showfiles.php?group_id=93841&package_id=139615&release_id=526638

Vendor comments (NVD) for CVE-2007-3961

  • Red Hat (2007-08-10T00:00:00)

    Red Hat does not consider a user assisted client crash such as this to be a security flaw.

Affected software / configurations for CVE-2007-3961

Vendor Product Version Raw CPE
fsp c_library <= 0.7 cpe:2.3:a:fsp:c_library:*:*:*:*:*:*:*:*

References for CVE-2007-3961

cvelogic Threat Intelligence