CVE-2013-5603

Use-after-free vulnerability in the nsContentUtils::ContentIsHostIncludingDescendantOf function in Mozilla Firefox before 25.0, Firefox ESR 24.x before 24.1, Thunderbird before 24.1, and SeaMonkey before 2.22 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving HTML document templates.

Published: 2013-10-30 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-5603 is rated High Risk (72.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 5.27%). 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-2013-5603

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 2025-07-09 4.43% 5.27% +0.84%
2 2025-04-09 3.52% 4.43% +0.91%
3 2025-03-30 — 3.52% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-5603

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2013-5603

OS Trackers for CVE-2013-5603

vendor priority summary link
gentoo normal CVE-2013-5603: 1 GLSA(s) (201504-01), 7 atom(s) (dev-libs/nspr, mail-client/thunderbird, …); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-5603
redhat critical — https://access.redhat.com/security/cve/CVE-2013-5603
suse high CVE-2013-5603 severity important: SUSE including 59 source package names (MozillaFirefox-140.2.0-160000.1.2, MozillaFirefox-31.1.0esr-1.20, …), 75 product×package rows across 26 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (26 product lines)): Fixed 75. https://www.suse.com/security/cve/CVE-2013-5603/
ubuntu medium CVE-2013-5603 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 12 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 10, ignored 2. https://ubuntu.com/security/CVE-2013-5603

NVD evaluator notes for CVE-2013-5603

Comment: CWE-416: Use After Free per http://cwe.mitre.org/data/definitions/416.html

Affected software / configurations for CVE-2013-5603

Vendor Product Version Raw CPE
mozilla thunderbird <= 24.0.1 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
mozilla thunderbird 17.0 cpe:2.3:a:mozilla:thunderbird:17.0:*:*:*:*:*:*:*
mozilla thunderbird 17.0.1 cpe:2.3:a:mozilla:thunderbird:17.0.1:*:*:*:*:*:*:*
mozilla thunderbird 17.0.2 cpe:2.3:a:mozilla:thunderbird:17.0.2:*:*:*:*:*:*:*
mozilla thunderbird 17.0.3 cpe:2.3:a:mozilla:thunderbird:17.0.3:*:*:*:*:*:*:*
mozilla thunderbird 17.0.4 cpe:2.3:a:mozilla:thunderbird:17.0.4:*:*:*:*:*:*:*
mozilla thunderbird 17.0.5 cpe:2.3:a:mozilla:thunderbird:17.0.5:*:*:*:*:*:*:*
mozilla thunderbird 17.0.6 cpe:2.3:a:mozilla:thunderbird:17.0.6:*:*:*:*:*:*:*
mozilla thunderbird 17.0.7 cpe:2.3:a:mozilla:thunderbird:17.0.7:*:*:*:*:*:*:*
mozilla thunderbird 17.0.8 cpe:2.3:a:mozilla:thunderbird:17.0.8:*:*:*:*:*:*:*
mozilla thunderbird 24.0 cpe:2.3:a:mozilla:thunderbird:24.0:*:*:*:*:*:*:*
mozilla thunderbird_esr 17.0.9 cpe:2.3:a:mozilla:thunderbird_esr:17.0.9:*:*:*:*:*:*:*
mozilla firefox 24.0 cpe:2.3:a:mozilla:firefox:24.0:*:*:*:*:*:*:*
mozilla firefox 24.0.1 cpe:2.3:a:mozilla:firefox:24.0.1:*:*:*:*:*:*:*
mozilla firefox 24.0.2 cpe:2.3:a:mozilla:firefox:24.0.2:*:*:*:*:*:*:*
mozilla seamonkey <= 2.22 cpe:2.3:a:mozilla:seamonkey:*:beta2:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:*:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:alpha_1:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:alpha_2:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:alpha_3:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:beta_1:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:beta_2:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:rc1:*:*:*:*:*:*
mozilla seamonkey 2.0 cpe:2.3:a:mozilla:seamonkey:2.0:rc2:*:*:*:*:*:*
mozilla seamonkey 2.0.1 cpe:2.3:a:mozilla:seamonkey:2.0.1:*:*:*:*:*:*:*
mozilla seamonkey 2.0.2 cpe:2.3:a:mozilla:seamonkey:2.0.2:*:*:*:*:*:*:*
mozilla seamonkey 2.0.3 cpe:2.3:a:mozilla:seamonkey:2.0.3:*:*:*:*:*:*:*
mozilla seamonkey 2.0.4 cpe:2.3:a:mozilla:seamonkey:2.0.4:*:*:*:*:*:*:*
mozilla seamonkey 2.0.5 cpe:2.3:a:mozilla:seamonkey:2.0.5:*:*:*:*:*:*:*
mozilla seamonkey 2.0.6 cpe:2.3:a:mozilla:seamonkey:2.0.6:*:*:*:*:*:*:*
mozilla seamonkey 2.0.7 cpe:2.3:a:mozilla:seamonkey:2.0.7:*:*:*:*:*:*:*
mozilla seamonkey 2.0.8 cpe:2.3:a:mozilla:seamonkey:2.0.8:*:*:*:*:*:*:*
mozilla seamonkey 2.0.9 cpe:2.3:a:mozilla:seamonkey:2.0.9:*:*:*:*:*:*:*
mozilla seamonkey 2.0.10 cpe:2.3:a:mozilla:seamonkey:2.0.10:*:*:*:*:*:*:*
mozilla seamonkey 2.0.11 cpe:2.3:a:mozilla:seamonkey:2.0.11:*:*:*:*:*:*:*
mozilla seamonkey 2.0.12 cpe:2.3:a:mozilla:seamonkey:2.0.12:*:*:*:*:*:*:*
mozilla seamonkey 2.0.13 cpe:2.3:a:mozilla:seamonkey:2.0.13:*:*:*:*:*:*:*
mozilla seamonkey 2.0.14 cpe:2.3:a:mozilla:seamonkey:2.0.14:*:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:*:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:alpha1:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:alpha2:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:alpha3:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:beta1:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:beta2:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:beta3:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:rc1:*:*:*:*:*:*
mozilla seamonkey 2.1 cpe:2.3:a:mozilla:seamonkey:2.1:rc2:*:*:*:*:*:*
mozilla seamonkey 2.10 cpe:2.3:a:mozilla:seamonkey:2.10:*:*:*:*:*:*:*
mozilla seamonkey 2.10 cpe:2.3:a:mozilla:seamonkey:2.10:beta1:*:*:*:*:*:*
mozilla seamonkey 2.10 cpe:2.3:a:mozilla:seamonkey:2.10:beta2:*:*:*:*:*:*
mozilla seamonkey 2.10 cpe:2.3:a:mozilla:seamonkey:2.10:beta3:*:*:*:*:*:*
mozilla seamonkey 2.10.1 cpe:2.3:a:mozilla:seamonkey:2.10.1:*:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:*:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta1:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta2:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta3:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta4:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta5:*:*:*:*:*:*
mozilla seamonkey 2.11 cpe:2.3:a:mozilla:seamonkey:2.11:beta6:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:*:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta1:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta2:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta3:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta4:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta5:*:*:*:*:*:*
mozilla seamonkey 2.12 cpe:2.3:a:mozilla:seamonkey:2.12:beta6:*:*:*:*:*:*
mozilla seamonkey 2.12.1 cpe:2.3:a:mozilla:seamonkey:2.12.1:*:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:*:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta1:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta2:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta3:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta4:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta5:*:*:*:*:*:*
mozilla seamonkey 2.13 cpe:2.3:a:mozilla:seamonkey:2.13:beta6:*:*:*:*:*:*
mozilla seamonkey 2.13.1 cpe:2.3:a:mozilla:seamonkey:2.13.1:*:*:*:*:*:*:*
mozilla seamonkey 2.13.2 cpe:2.3:a:mozilla:seamonkey:2.13.2:*:*:*:*:*:*:*
mozilla seamonkey 2.14 cpe:2.3:a:mozilla:seamonkey:2.14:*:*:*:*:*:*:*
mozilla seamonkey 2.14 cpe:2.3:a:mozilla:seamonkey:2.14:beta1:*:*:*:*:*:*
mozilla seamonkey 2.14 cpe:2.3:a:mozilla:seamonkey:2.14:beta2:*:*:*:*:*:*
mozilla seamonkey 2.14 cpe:2.3:a:mozilla:seamonkey:2.14:beta3:*:*:*:*:*:*

References for CVE-2013-5603

cvelogic Threat Intelligence