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CVE-2023-20101

27
FAUCET Score

CVE-2023-20101 is a critical vulnerability in Cisco Emergency Responder that allows an unauthenticated, remote attacker to log in using a static, unchangeable root account. This flaw, due to hardcoded development credentials, grants an attacker full root access and the ability to execute arbitrary commands. With a CVSS score of 9.8 (CRITICAL), it presents a significant risk due to its network-based attack vector and low complexity. While no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available, the vulnerability has garnered substantial community discussion and media coverage, indicating high awareness. It is not listed in CISA's KEV catalog, suggesting no known active exploitation at this time.

Impacted Technologies

VendorProductVersion(s)CPE
12.5\(1\)su4CPE matchmatch criteria
cpe:2.3:a:cisco:emergency_responder:12.5\(1\)su4:*:*:*:*:*:*:*

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
2.45%
Probability of exploitation in next 30 days
EPSS Percentile
82.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0245 is in the 73rd percentile among its peer group of 36,897 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

The average CVE in this peer group has 0.3 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-cer-priv-esc-B9t3hqk9
Vendor Advisory