CVE-2010-3872 | Httpd: mod_fcgid: stack-based buffer overflow in fcgid_header_bucket_read() in modules/fcgid/fcgid_bucket.c

A flaw was found in the mod_fcgid module of httpd. A malformed FastCGI response may result in a stack-based buffer overflow in the modules/fcgid/fcgid_bucket.c file in the fcgid_header_bucket_read() function, resulting in an application crash.

Published: 2010-11-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-3872 is rated Moderate Risk (61.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.77%). EPSS rose +1.83% over the last day, indicating growing attacker interest. 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-2010-3872

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 0.94% 2.77% +1.83%
2 2025-03-30 1.61% 0.94% -0.66%
3 2025-03-29 — 1.61% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-3872

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2010-3872

OS Trackers for CVE-2010-3872

vendor priority summary link
debian not yet assigned CVE-2010-3872 not yet assigned priority: Debian including 1 source packages (libapache2-mod-fcgid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2010-3872
gentoo high CVE-2010-3872: 1 GLSA(s) (201207-09), 1 atom(s) (www-apache/mod_fcgid); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-3872
redhat medium — https://access.redhat.com/security/cve/CVE-2010-3872
ubuntu medium CVE-2010-3872 medium priority: Ubuntu including 1 source packages (libapache2-mod-fcgid), 6 status rows across 6 suites (dapper, hardy, karmic, lucid, maverick, upstream): released 5, ignored 1. https://ubuntu.com/security/CVE-2010-3872

Affected software / configurations for CVE-2010-3872

Vendor Product Version Raw CPE
apache mod_fcgid <= 2.3.5 cpe:2.3:a:apache:mod_fcgid:*:*:*:*:*:*:*:*
apache mod_fcgid 2.3.1 cpe:2.3:a:apache:mod_fcgid:2.3.1:*:*:*:*:*:*:*
apache mod_fcgid 2.3.2 cpe:2.3:a:apache:mod_fcgid:2.3.2:*:*:*:*:*:*:*
apache mod_fcgid 2.3.3 cpe:2.3:a:apache:mod_fcgid:2.3.3:*:*:*:*:*:*:*
apache mod_fcgid 2.3.4 cpe:2.3:a:apache:mod_fcgid:2.3.4:*:*:*:*:*:*:*

References for CVE-2010-3872

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050930.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050932.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050976.html
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00005.html
http://osvdb.org/69275
http://secunia.com/advisories/42288 Vendor Advisory
http://secunia.com/advisories/42302 Vendor Advisory
http://secunia.com/advisories/42815
http://www.debian.org/security/2010/dsa-2140
http://www.gossamer-threads.com/lists/apache/announce/391406
http://www.securityfocus.com/bid/44900
http://www.vupen.com/english/advisories/2010/2997 Vendor Advisory
http://www.vupen.com/english/advisories/2010/2998 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0031
https://access.redhat.com/security/cve/CVE-2010-3872
https://bugzilla.redhat.com/show_bug.cgi?id=2248172
https://exchange.xforce.ibmcloud.com/vulnerabilities/63303
https://github.com/apache/httpd-mod_fcgid/commit/b1afa70840b4ab4e6fbc12ac8798b2f3ccc336b2
https://issues.apache.org/bugzilla/show_bug.cgi?id=49406 Patch
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