CVE-2014-2525

Exp

Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6 allows context-dependent attackers to execute arbitrary code via a long sequence of percent-encoded characters in a URI in a YAML file.

Published: 2014-03-28 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-2525 is rated High Exploit Risk (70.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 9.19%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2014-2525

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2014-2525

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 53.84% 9.19% -44.65%
2 2026-06-11 61.90% 53.84% -8.06%
3 2026-05-30 — 61.90% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-2525

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2014-2525

OS Trackers for CVE-2014-2525

vendor priority summary link
debian not yet assigned CVE-2014-2525 not yet assigned priority: Debian including 2 source packages (libyaml, libyaml-libyaml-perl), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2014-2525
gentoo normal CVE-2014-2525: 1 GLSA(s) (201405-27), 1 atom(s) (dev-libs/libyaml); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-2525
redhat high — https://access.redhat.com/security/cve/CVE-2014-2525
suse medium CVE-2014-2525 severity moderate: SUSE including 258 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 351 product×package rows across 77 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (77 product lines)): Known Affected 157, Fixed 149, Known Not Affected 45. https://www.suse.com/security/cve/CVE-2014-2525/
ubuntu medium CVE-2014-2525 medium priority: Ubuntu including 2 source packages (libyaml, libyaml-libyaml-perl), 10 status rows across 5 suites (lucid, precise, quantal, saucy, upstream): released 7, ignored 2, needed 1. https://ubuntu.com/security/CVE-2014-2525

Affected software / configurations for CVE-2014-2525

Vendor Product Version Raw CPE
pyyaml libyaml <= 0.1.5 cpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
pyyaml libyaml 0.0.1 cpe:2.3:a:pyyaml:libyaml:0.0.1:*:*:*:*:*:*:*
pyyaml libyaml 0.1.1 cpe:2.3:a:pyyaml:libyaml:0.1.1:*:*:*:*:*:*:*
pyyaml libyaml 0.1.2 cpe:2.3:a:pyyaml:libyaml:0.1.2:*:*:*:*:*:*:*
pyyaml libyaml 0.1.3 cpe:2.3:a:pyyaml:libyaml:0.1.3:*:*:*:*:*:*:*
pyyaml libyaml 0.1.4 cpe:2.3:a:pyyaml:libyaml:0.1.4:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

References for CVE-2014-2525

URL Tags
http://advisories.mageia.org/MGASA-2014-0150.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-04/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-02/msg00078.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-04/msg00050.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0353.html
http://rhn.redhat.com/errata/RHSA-2014-0354.html
http://rhn.redhat.com/errata/RHSA-2014-0355.html
http://secunia.com/advisories/57836
http://secunia.com/advisories/57966
http://secunia.com/advisories/57968
http://support.apple.com/kb/HT6443
http://www.debian.org/security/2014/dsa-2884
http://www.debian.org/security/2014/dsa-2885
http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
http://www.mandriva.com/security/advisories?name=MDVSA-2015:060
http://www.ocert.org/advisories/ocert-2014-003.html US Government Resource
http://www.securityfocus.com/bid/66478
http://www.ubuntu.com/usn/USN-2160-1
https://bitbucket.org/xi/libyaml/commits/bce8b60f0b9af69fa9fab3093d0a41ba243de048 Exploit Patch
https://puppet.com/security/cve/cve-2014-2525
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