CVE-2013-0798

Mozilla Firefox before 20.0 on Android uses world-writable and world-readable permissions for the app_tmp installation directory in the local filesystem, which allows attackers to modify add-ons before installation via an application that leverages the time window during which app_tmp is used.

Published: 2013-04-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-0798 is rated Low Risk (38.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.99%). 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-2013-0798

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 0.30% 0.99% +0.69%
2 2025-07-09 0.22% 0.30% +0.08%
3 2025-03-30 — 0.22% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-0798

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N 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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-0798

OS Trackers for CVE-2013-0798

vendor priority summary link
ubuntu medium CVE-2013-0798 medium priority: Ubuntu including 1 source packages (firefox), 6 status rows across 6 suites (hardy, lucid, oneiric, precise, quantal, upstream): not-affected 4, ignored 1, released 1. https://ubuntu.com/security/CVE-2013-0798

Affected software / configurations for CVE-2013-0798

Vendor Product Version Raw CPE
mozilla firefox <= 19.0.2 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox 19.0 cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:*
mozilla firefox 19.0.1 cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:*

References for CVE-2013-0798

cvelogic Threat Intelligence