VulnerabilityModified

CVE-2013-5597

HIGH 10.0EPSS 6.27%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Use-after-free vulnerability in the nsDocLoader::doStopDocumentLoad function in Mozilla Firefox before 25.0, Firefox ESR 17.x before 17.0.10 and 24.x before 24.1, Thunderbird before 24.1, Thunderbird ESR 17.x before 17.0.10, and SeaMonkey before 2.22 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving a state-change event during an update of the offline cache.

CVSS 2.0: 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS: 6.27% probability · 94th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Affected: mozilla/thunderbird esr · mozilla/thunderbird · mozilla/firefox · mozilla/seamonkey
Source: security@mozilla.org

EPSS trend

EPSS 6.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.