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CVE-2021-31584

28
FAUCET Score

CVE-2021-31584 describes a Cross-Site Request Forgery (CSRF) vulnerability in Sipwise C5 NGCP www_csc versions up to and including platform NGCP CE mr3.8.13. This flaw allows attackers to perform administrative actions, such as call/click2dial, without the user's consent. With a CVSS score of 8.8 (High), the vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.6.4CPE matchmatch criteria
cpe:2.3:a:sipwise:next_generation_communication_platform:3.6.4:*:*:*:ce:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
56.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 58th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.sipwise.com / pipermail/spce-user_lists.sipwise.com/2021-September/014708.html
Mailing ListVendor Advisory
packetstormsecurity.com / files/162318/Sipwise-C5-NGCP-CSC-Cross-Site-Request-Forgery.html
ExploitThird Party AdvisoryVDB Entry
sipwise.com
Product
zeroscience.mk / en/vulnerabilities
ExploitThird Party Advisory
zeroscience.mk / en/vulnerabilities/ZSL-2021-5649.php
Third Party Advisory