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CVE-2021-30137

25
FAUCET Score

CVE-2021-30137 describes an authenticated XML External Entity (XXE) vulnerability in Assyst 10 SP7.5, which can lead to Server-Side Request Forgery (SSRF) due to improper XML unmarshalling. This high-severity vulnerability (CVSS 8.2) allows an authenticated attacker to inject malicious XML data through various access points, potentially impacting the confidentiality and availability of the system. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the FAUCET Risk Score of 63/100 indicates a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
10CPE matchmatch criteria
cpe:2.3:a:axiossystems:assyst:10:sp7.5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.3
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 29th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

github.com / post-cyberlabs/CVE-Advisory/blob/main/CVE-2021-30137.pdf
ExploitThird Party Advisory