No exploitation reportedFix available

CVE-2023-20079

Q: Is CVE-2023-20079 actively exploited?

Active exploitation of CVE-2023-20079 has not been confirmed. Its EPSS score was 10.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-20079?

CVE-2023-20079 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-03-03
Fixed in11.3.7sr1
WeaknessCWE-121 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Multiple vulnerabilities in the web-based management interface of certain Cisco IP Phones could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory.

Timeline

dates in UTC

2023-03-0316:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-20079?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20079?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco ip phone 6825 firmwareversion to verify

Branch	Affected	Fixed in	Source
11.3	< 11.3.7sr1	11.3.7sr1	NVD

Cisco ip phone 6841 firmwareversion to verify

Branch	Affected	Fixed in	Source
11.3	< 11.3.7sr1	11.3.7sr1	NVD

Cisco ip phone 6851 firmwareversion to verify

Branch	Affected	Fixed in	Source
11.3	< 11.3.7sr1	11.3.7sr1	NVD

18 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Cisco ip phone 6825 firmware to 11.3.7sr1

Advisories and patches

sec.cloudapps.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-10-28
OpenCVESSVC decisionnone—
CNACVSS 3.19.8read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-121read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score10.3 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-03-03
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-20079?

Is CVE-2023-20079 actively exploited?

Active exploitation of CVE-2023-20079 has not been confirmed. Its EPSS score was 10.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-20079?

CVE-2023-20079 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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