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CVE-2016-4407

21
FAUCET Score

CVE-2016-4407 describes a signature validation flaw in the DSA algorithm implementation within SAP SAPCRYPTOLIB 5.555.38. This vulnerability allows remote authenticated attackers to impersonate arbitrary users due to improper signature checking. With a CVSS score of 6.5 (Medium), it presents a low-complexity network attack vector leading to high integrity impact without requiring user interaction. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.555.38CPE matchmatch criteria
cpe:2.3:a:sap:sapcryptolib:5.555.38:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.96%
Probability of exploitation in next 30 days
EPSS Percentile
57.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0096 is in the 70th percentile among its peer group of 21,951 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

seclists.org / fulldisclosure/2016/Oct/32
Mailing ListThird Party Advisory
onapsis.com / research/security-advisories/sap-missing-signature-check-dsa-algorithm
Permissions Required
securityfocus.com / bid/93502