SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-31589

A cross-site scripting (XSS) vulnerability has been reported and confirmed for BeyondTrust Secure Remote Access Base Software version 6.0.1 and older, which allows the injection of unauthenticated, specially-crafted web requests without proper…

MEDIUM 6.1EPSS 26.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 26.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

A cross-site scripting (XSS) vulnerability has been reported and confirmed for BeyondTrust Secure Remote Access Base Software version 6.0.1 and older, which allows the injection of unauthenticated, specially-crafted web requests without proper sanitization.

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
25.99% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
beyondtrust/appliance base software
Source
cve@mitre.org
EPSS trend
0%15%30%26 October 2026: 25.99%26 October 202626 October 2026

EPSS 26.0% 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.

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