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CVE-2021-45967

53
FAUCET Score

CVE-2021-45967 is a critical path traversal vulnerability affecting Pascom Cloud Phone System versions prior to 7.20.x, stemming from a misconfiguration between NGINX and a backend Tomcat server. This flaw allows unauthenticated attackers to access unintended endpoints, potentially leading to full compromise of confidentiality, integrity, and availability. With a CVSS score of 9.8 and an EPSS score indicating high exploitability, this vulnerability poses a significant risk. While no active exploitation or public Metasploit/ExploitDB modules are reported, Nuclei templates exist for Server-Side Request Forgery, and the lack of community discussion or media coverage does not diminish its severe impact.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.19CPE matchmatch criteria
cpe:2.3:a:pascom:cloud_phone_system:*:*:*:*:*:*:*:*
< 4.5.0CPE matchmatch criteria
cpe:2.3:a:igniterealtime:openfire:*:*:*:*:*:*:*:*
4.5.0CPE matchmatch criteria
cpe:2.3:a:igniterealtime:openfire:4.5.0:-:*:*:*:*:*:*

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
20.80%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-45967 · Mar 19, 2022
This CVE's current EPSS score of 0.2080 is in the 94th percentile among its peer group of 36,862 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

Patch Available

Remediation records are not available for this CVE.

References

kerbit.io / research/read/blog/4
ExploitPatchThird Party Advisory
tutorialboy24.blogspot.com / 2022/03/the-story-of-3-bugs-that-lead-to.html
ExploitPatchThird Party Advisory
pascom.net / doc/en/release-notes
Release NotesVendor Advisory
pascom.net / doc/en/release-notes/pascom19
Release NotesVendor Advisory