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CVE-2021-44524

29
FAUCET Score

CVE-2021-44524 is a critical vulnerability affecting Siemens SiPass integrated and Siveillance Identity products, where insufficient access controls to the internal user authentication service allow an unauthenticated remote attacker to perform actions as legitimate users. With a CVSS score of 9.8, this flaw presents a high risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.76CPE matchmatch criteria
cpe:2.3:a:siemens:sipass_integrated:2.76:-:*:*:*:*:*:*
2.76CPE matchmatch criteria
cpe:2.3:a:siemens:sipass_integrated:2.76:sp1:*:*:*:*:*:*
2.80CPE matchmatch criteria
cpe:2.3:a:siemens:sipass_integrated:2.80:*:*:*:*:*:*:*
2.85CPE matchmatch criteria
cpe:2.3:a:siemens:sipass_integrated:2.85:*:*:*:*:*:*:*
>= 1.6, <= 1.6.284.0CPE matchmatch criteria
cpe:2.3:a:siemens:siveillance_identity:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 60th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-160202.pdf
Vendor Advisory
cert-portal.siemens.com / productcert/pdf/ssa-463116.pdf
Vendor Advisory