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CVE-2021-31589

48
FAUCET Score

CVE-2021-31589 is a cross-site scripting (XSS) vulnerability affecting BeyondTrust Secure Remote Access Base Software versions 6.0.1 and older, allowing unauthenticated attackers to inject malicious web requests due to insufficient input sanitization. With a CVSS score of 6.1 (Medium), this vulnerability can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to low impact on confidentiality and integrity. While there is no evidence of active exploitation or Metasploit modules, Nuclei templates exist, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.0.1CPE matchmatch criteria
cpe:2.3:o:beyondtrust:appliance_base_software:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
28.21%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-31589 · Jan 5, 2022
This CVE's current EPSS score of 0.2821 is in the 99th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/165408/BeyondTrust-Remote-Support-6.0-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
cxsecurity.com / issue/WLB-2022010013
ExploitIssue TrackingThird Party Advisory
beyondtrust.com / docs/release-notes/index.htm
Release NotesVendor Advisory