CVE-2005-4077

Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a "?" separator in the hostname portion, which causes a "/" to be prepended to the resulting string.

Published: 2005-12-08 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-4077 is rated Low Risk (32.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.52%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2005-4077

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 0.27% 0.52% +0.25%
2 2025-07-16 0.14% 0.27% +0.12%
3 2025-03-30 — 0.14% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-4077

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2005-4077

OS Trackers for CVE-2005-4077

vendor priority summary link
debian medium CVE-2005-4077 medium priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2005-4077
gentoo normal CVE-2005-4077: 2 GLSA(s) (200512-09, 200603-25), 3 atom(s) (app-office/openoffice, app-office/openoffice-bin, net-misc/curl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2005-4077
redhat medium — https://access.redhat.com/security/cve/CVE-2005-4077
ubuntu medium CVE-2005-4077 medium priority: Ubuntu including 1 source packages (curl), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-4077

Affected software / configurations for CVE-2005-4077

Vendor Product Version Raw CPE
daniel_stenberg curl 7.11.2 cpe:2.3:a:daniel_stenberg:curl:7.11.2:*:*:*:*:*:*:*
daniel_stenberg curl 7.12 cpe:2.3:a:daniel_stenberg:curl:7.12:*:*:*:*:*:*:*
daniel_stenberg curl 7.12.1 cpe:2.3:a:daniel_stenberg:curl:7.12.1:*:*:*:*:*:*:*
daniel_stenberg curl 7.12.2 cpe:2.3:a:daniel_stenberg:curl:7.12.2:*:*:*:*:*:*:*
daniel_stenberg curl 7.12.3 cpe:2.3:a:daniel_stenberg:curl:7.12.3:*:*:*:*:*:*:*
daniel_stenberg curl 7.13 cpe:2.3:a:daniel_stenberg:curl:7.13:*:*:*:*:*:*:*
daniel_stenberg curl 7.13.1 cpe:2.3:a:daniel_stenberg:curl:7.13.1:*:*:*:*:*:*:*
daniel_stenberg curl 7.13.2 cpe:2.3:a:daniel_stenberg:curl:7.13.2:*:*:*:*:*:*:*
daniel_stenberg curl 7.14 cpe:2.3:a:daniel_stenberg:curl:7.14:*:*:*:*:*:*:*
daniel_stenberg curl 7.14.1 cpe:2.3:a:daniel_stenberg:curl:7.14.1:*:*:*:*:*:*:*
daniel_stenberg curl 7.15 cpe:2.3:a:daniel_stenberg:curl:7.15:*:*:*:*:*:*:*

References for CVE-2005-4077

URL Tags
ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2006.16/SCOSA-2006.16.txt
http://curl.haxx.se/docs/adv_20051207.html Patch Vendor Advisory
http://docs.info.apple.com/article.html?artnum=307562
http://lists.apple.com/archives/security-announce/2006/May/msg00003.html
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
http://qa.openoffice.org/issues/show_bug.cgi?id=59032
http://secunia.com/advisories/17907 Patch Vendor Advisory
http://secunia.com/advisories/17960 Vendor Advisory
http://secunia.com/advisories/17961 Vendor Advisory
http://secunia.com/advisories/17965 Vendor Advisory
http://secunia.com/advisories/17977 Vendor Advisory
http://secunia.com/advisories/18105 Vendor Advisory
http://secunia.com/advisories/18188 Vendor Advisory
http://secunia.com/advisories/18336 Vendor Advisory
http://secunia.com/advisories/19261 Vendor Advisory
http://secunia.com/advisories/19433 Vendor Advisory
http://secunia.com/advisories/19457 Vendor Advisory
http://secunia.com/advisories/20077 Vendor Advisory
http://www.debian.org/security/2005/dsa-919
http://www.gentoo.org/security/en/glsa/glsa-200512-09.xml
http://www.gentoo.org/security/en/glsa/glsa-200603-25.xml
http://www.hardened-php.net/advisory_242005.109.html Patch Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2005:224
http://www.redhat.com/archives/fedora-announce-list/2005-December/msg00020.html
http://www.redhat.com/support/errata/RHSA-2005-875.html
http://www.securityfocus.com/archive/1/418849/100/0/threaded
http://www.securityfocus.com/bid/15756 Patch
http://www.securityfocus.com/bid/17951
http://www.trustix.org/errata/2005/0072/
http://www.us-cert.gov/cas/techalerts/TA06-132A.html US Government Resource
http://www.vupen.com/english/advisories/2005/2791 Vendor Advisory
http://www.vupen.com/english/advisories/2006/0960 Vendor Advisory
http://www.vupen.com/english/advisories/2006/1779 Vendor Advisory
http://www.vupen.com/english/advisories/2008/0924/references Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10855
https://usn.ubuntu.com/228-1/
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