CVE-2012-0036

curl and libcurl 7.2x before 7.24.0 do not properly consider special characters during extraction of a pathname from a URL, which allows remote attackers to conduct data-injection attacks via a crafted URL, as demonstrated by a CRLF injection attack on the (1) IMAP, (2) POP3, or (3) SMTP protocol.

Published: 2012-04-13 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-0036 is rated High Risk (66.4/100): CVSS High severity, with high exploitation likelihood (EPSS 10.34%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.81% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2012-0036

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 2026-03-25 6.54% 10.34% +3.81%
2 2025-12-07 8.59% 6.54% -2.06%
3 2025-12-03 — 8.59% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-0036

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-2012-0036

OS Trackers for CVE-2012-0036

vendor priority summary link
debian not yet assigned CVE-2012-0036 not yet assigned 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-2012-0036
gentoo normal CVE-2012-0036: 1 GLSA(s) (201203-02), 1 atom(s) (net-misc/curl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-0036
redhat medium — https://access.redhat.com/security/cve/CVE-2012-0036
ubuntu medium CVE-2012-0036 medium priority: Ubuntu including 1 source packages (curl), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 4, not-affected 2. https://ubuntu.com/security/CVE-2012-0036

Affected software / configurations for CVE-2012-0036

Vendor Product Version Raw CPE
curl curl 7.20.0 cpe:2.3:a:curl:curl:7.20.0:*:*:*:*:*:*:*
curl curl 7.20.1 cpe:2.3:a:curl:curl:7.20.1:*:*:*:*:*:*:*
curl curl 7.21.0 cpe:2.3:a:curl:curl:7.21.0:*:*:*:*:*:*:*
curl curl 7.21.1 cpe:2.3:a:curl:curl:7.21.1:*:*:*:*:*:*:*
curl curl 7.21.2 cpe:2.3:a:curl:curl:7.21.2:*:*:*:*:*:*:*
curl curl 7.21.3 cpe:2.3:a:curl:curl:7.21.3:*:*:*:*:*:*:*
curl curl 7.21.4 cpe:2.3:a:curl:curl:7.21.4:*:*:*:*:*:*:*
curl curl 7.21.5 cpe:2.3:a:curl:curl:7.21.5:*:*:*:*:*:*:*
curl curl 7.21.6 cpe:2.3:a:curl:curl:7.21.6:*:*:*:*:*:*:*
curl curl 7.21.7 cpe:2.3:a:curl:curl:7.21.7:*:*:*:*:*:*:*
curl curl 7.22.0 cpe:2.3:a:curl:curl:7.22.0:*:*:*:*:*:*:*
curl curl 7.23.0 cpe:2.3:a:curl:curl:7.23.0:*:*:*:*:*:*:*
curl curl 7.23.1 cpe:2.3:a:curl:curl:7.23.1:*:*:*:*:*:*:*
curl libcurl 7.20.0 cpe:2.3:a:curl:libcurl:7.20.0:*:*:*:*:*:*:*
curl libcurl 7.20.1 cpe:2.3:a:curl:libcurl:7.20.1:*:*:*:*:*:*:*
curl libcurl 7.21.0 cpe:2.3:a:curl:libcurl:7.21.0:*:*:*:*:*:*:*
curl libcurl 7.21.1 cpe:2.3:a:curl:libcurl:7.21.1:*:*:*:*:*:*:*
curl libcurl 7.21.2 cpe:2.3:a:curl:libcurl:7.21.2:*:*:*:*:*:*:*
curl libcurl 7.21.3 cpe:2.3:a:curl:libcurl:7.21.3:*:*:*:*:*:*:*
curl libcurl 7.21.4 cpe:2.3:a:curl:libcurl:7.21.4:*:*:*:*:*:*:*
curl libcurl 7.21.5 cpe:2.3:a:curl:libcurl:7.21.5:*:*:*:*:*:*:*
curl libcurl 7.21.6 cpe:2.3:a:curl:libcurl:7.21.6:*:*:*:*:*:*:*
curl libcurl 7.21.7 cpe:2.3:a:curl:libcurl:7.21.7:*:*:*:*:*:*:*
curl libcurl 7.22.0 cpe:2.3:a:curl:libcurl:7.22.0:*:*:*:*:*:*:*
curl libcurl 7.23.0 cpe:2.3:a:curl:libcurl:7.23.0:*:*:*:*:*:*:*
curl libcurl 7.23.1 cpe:2.3:a:curl:libcurl:7.23.1:*:*:*:*:*:*:*

References for CVE-2012-0036

URL Tags
http://curl.haxx.se/curl-url-sanitize.patch Patch
http://curl.haxx.se/docs/adv_20120124.html Vendor Advisory
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://secunia.com/advisories/48256
http://security.gentoo.org/glsa/glsa-201203-02.xml
http://support.apple.com/kb/HT5281
http://www.debian.org/security/2012/dsa-2398
http://www.mandriva.com/security/advisories?name=MDVSA-2012:058
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.securityfocus.com/bid/51665
http://www.securitytracker.com/id/1032924
https://bugzilla.redhat.com/show_bug.cgi?id=773457
https://github.com/bagder/curl/commit/75ca568fa1c19de4c5358fed246686de8467c238
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03760en_us
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