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CVE-2024-20381

26
FAUCET Score

CVE-2024-20381 is a high-severity vulnerability in the JSON-RPC API of Cisco Crosswork Network Services Orchestrator (NSO), ConfD, Cisco Optical Site Manager, and Cisco RV340 routers, stemming from improper authorization checks. An authenticated, remote attacker can exploit this to modify configurations, create new user accounts, or elevate privileges. With a CVSS score of 8.8 (High), this vulnerability allows for full compromise of confidentiality, integrity, and availability with low attack complexity. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
6.5.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*
6.5.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
6.5.3CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
6.5.15CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:*
6.5.25CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 34th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-nso-auth-bypass-QnTEesp
Vendor Advisory