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Vulnerability details: VCID-1wj7-7cne-hugr
Vulnerability ID VCID-1wj7-7cne-hugr
Aliases CVE-2013-1721
Summary Security researcher Alex Chapman reported that the Almost Native Graphics Layer Engine (ANGLE) library used by Mozilla is vulnerable to an integer overflow. This vulnerability is present because of insufficient bounds checking in the drawLineLoop function, which can be driven by web content to overflow allocated memory, leading to a potentially exploitable crash. In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
epss 0.00889 https://api.first.org/data/v1/epss?cve=CVE-2013-1721
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2013-78
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-1721.json
https://api.first.org/data/v1/epss?cve=CVE-2013-1721
1009213 https://bugzilla.redhat.com/show_bug.cgi?id=1009213
CVE-2013-1721 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1721
mfsa2013-78 https://www.mozilla.org/en-US/security/advisories/mfsa2013-78
USN-1951-1 https://usn.ubuntu.com/1951-1/
USN-1952-1 https://usn.ubuntu.com/1952-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.75459
EPSS Score 0.00889
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:17:37.343273+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2013/mfsa2013-78.md 38.0.0