SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-2736

The nsZipArchive::BuildFileList function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 accesses unintended memory locations, which allows remote attackers to have an unspecified impact via…

HIGH 9.3EPSS 3.74%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The nsZipArchive::BuildFileList function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 accesses unintended memory locations, which allows remote attackers to have an unspecified impact via a crafted ZIP archive.

CVSS 2.0
9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
3.74% probability · 90th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-17
Affected
mozilla/firefox · mozilla/thunderbird · mozilla/firefox esr · oracle/solaris · novell/suse linux enterprise software development kit · canonical/ubuntu linux · debian/debian linux · novell/suse linux enterprise desktop · novell/suse linux enterprise server
Source
security@mozilla.org
EPSS trend
0%3%5%26 October 2026: 3.74%26 October 202626 October 2026

EPSS 3.7% since 26 October 2026; no change recorded yet. 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.