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CVE-2023-20079

30
FAUCET Score

CVE-2023-20079 describes multiple vulnerabilities in the web-based management interface of certain Cisco IP Phones, potentially allowing an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service. This vulnerability carries a high CVSS score of 7.5, indicating a critical risk due to its network-based attack vector and low attack complexity, with the primary impact being denial of service. While there is no evidence of active exploitation (KEV: No), the vulnerability has garnered significant community attention with 13 mentions and 3 media articles, including reports of a critical Web UI RCE flaw. Despite this, no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.3.7sr1CPE matchmatch criteria
cpe:2.3:o:cisco:ip_phone_6871_firmware:*:*:*:*:*:*:*:*
< 11.3.7sr1CPE matchmatch criteria
cpe:2.3:o:cisco:ip_phone_6861_firmware:*:*:*:*:*:*:*:*
< 11.3.7sr1CPE matchmatch criteria
cpe:2.3:o:cisco:ip_phone_6851_firmware:*:*:*:*:*:*:*:*
< 11.3.7sr1CPE matchmatch criteria
cpe:2.3:o:cisco:ip_phone_6841_firmware:*:*:*:*:*:*:*:*
< 11.3.7sr1CPE matchmatch criteria
cpe:2.3:o:cisco:ip_phone_6825_firmware:*:*:*:*:*:*:*:*

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
10.31%
Probability of exploitation in next 30 days
EPSS Percentile
95.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1031 is in the 93rd percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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-ip-phone-cmd-inj-KMFynVcP
Vendor Advisory