XSS in Beyondtrust Appliance Base Software
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 sanitization.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.251 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.282 · newest: 0.251 · change: -0.031
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.beyondtrust.com/docs/release-notes/index.htm (Release Notes, Vendor Advisory)
- packetstormsecurity.com/files/165408/BeyondTrust-Remote-Support-6.0-Cross-Site-… (Exploit, VDB Entry, Third Party Advisory)
- cxsecurity.com/issue/WLB-2022010013 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-31589?
- CVE-2021-31589 is a medium-severity vulnerability in Beyondtrust Appliance Base Software, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-05.
- How severe is CVE-2021-31589?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-31589 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.