SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-26596

A malicious user can change a filename of an uploaded file to include JavaScript code, which is then stored and executed by a victim's web browser.

MEDIUM 5.4EPSS 0.74%

Does this matter?

Lower severity and a low EPSS score (0.74%). Track it; it rarely justifies an emergency change on its own.

Description

An issue was discovered in Nokia NetAct 18A. A malicious user can change a filename of an uploaded file to include JavaScript code, which is then stored and executed by a victim's web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to victims. Here, the /netact/sct filename parameter is used.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.74% probability · 54th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
nokia/netact
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 0.74%26 October 202626 October 2026

EPSS 0.7% 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.