Public proof of concept

CVE-2023-20025

A public proof of concept exists; no exploitation attested.

Published2023-01-20
WeaknessCWE-290 · CWE-293

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

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to bypass authentication and gain root access on the underlying operating system.

Timeline

dates in UTC

2023-01-2007:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2023-20025?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20025?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco rv016 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Cisco rv042 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Cisco rv042g firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

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

Fix

Advisories and patches

sec.cloudapps.cisco.comMitigation · Vendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedlnversed/CVE-2023-20025

Sources

CISA-ADPSSVC decisionnone2024-10-28
OpenCVESSVC decisionnone—
CNACVSS 3.19read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-293read 2026-10-23
NVDweakness (CWE)CWE-290read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-01-20
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2023-20025?

Is CVE-2023-20025 actively exploited?

Active exploitation of CVE-2023-20025 has not been confirmed. Its EPSS score was 1.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-20025?

CVE-2023-20025 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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