SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2014-3381

The ZIP inspection engine in Cisco AsyncOS 8.5 and earlier on the Cisco Email Security Appliance (ESA) does not properly analyze ZIP archives, which allows remote attackers to bypass malware filtering via a crafted archive, aka Bug ID CSCup07934.

MEDIUM 5.0EPSS 1.72%

Does this matter?

Lower severity and a low EPSS score (1.72%). Track it; it rarely justifies an emergency change on its own.

Description

The ZIP inspection engine in Cisco AsyncOS 8.5 and earlier on the Cisco Email Security Appliance (ESA) does not properly analyze ZIP archives, which allows remote attackers to bypass malware filtering via a crafted archive, aka Bug ID CSCup07934.

CVSS 2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
EPSS
1.72% probability · 77th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-264
Affected
cisco/asyncos
Source
psirt@cisco.com
EPSS trend
0%3%5%26 October 2026: 1.72%26 October 202626 October 2026

EPSS 1.7% 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.

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