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CVE-2023-20078

36
FAUCET Score

CVE-2023-20078 describes multiple critical vulnerabilities in the web-based management interface of various Cisco IP Phones, allowing unauthenticated, remote attackers to execute arbitrary code or cause a denial of service. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not currently listed on CISA's KEV or having public Metasploit/Nuclei exploits, it has garnered significant community discussion and media coverage, indicating high awareness and potential for future exploitation.

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
10.35%
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 0.1035 is in the 91st 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-ip-phone-cmd-inj-KMFynVcP
Vendor Advisory