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CVE-2023-50477

26
FAUCET Score

CVE-2023-50477 is a critical privilege escalation vulnerability affecting nos client version 0.6.6, specifically through the getRPCEndpoint.js component. With a CVSS score of 9.8, it presents a severe risk as an unauthenticated remote attacker can fully compromise confidentiality, integrity, and availability. While the vulnerability has a high FAUCET Risk Score of 80/100, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
0.6.6CPE matchmatch criteria
cpe:2.3:a:nos:nos_client:0.6.6:*:*:*:*:*:*:*

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
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 33rd percentile among its peer group of 36,829 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

github.com / nos/client/issues/1485
Issue Tracking
github.com / tianjk99/Cryptographic-Misuses/blob/main/CVE-2023-50477.md
Third Party Advisory