SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-26623

A remote code execution vulnerability due to incomplete check for 'xheader_decode_path_record' function's parameter length value in the ark library.

CRITICAL 9.8EPSS 1.13%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A remote code execution vulnerability due to incomplete check for 'xheader_decode_path_record' function's parameter length value in the ark library. Remote attackers can induce exploit malicious code using this function.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.13% probability · 66th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125, CWE-787
Affected
bandisoft/bandizip
Source
vuln@krcert.or.kr
EPSS trend
0%3%5%26 October 2026: 1.13%26 October 202626 October 2026

EPSS 1.1% 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.