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Vulnerability record · CVE-2023-20025 · published 20 January 2023

CVE-2023-20025: Cisco rv016 firmware authentication bypass by spoofing vulnerability

Cisco · Rv016 Firmware

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.

9.8 CVSS 3.1 Critical EPSS 1.6% · top 24.7% CWE-293 · CWE-293CWE-290 · Authentication bypass by spoofing
9.8CVSS 3.1 base score
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5 MitigationVendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5 MitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.2CVE-2023-20118Cisco Small Business RV Series Routers Command InjectionThe web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 routers fails to properly validate user inpu…KEVEPSS 54%analysed9.1CVE-2024-20520Cisco rv042 firmware stack-based buffer overflow vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, A…EPSS 0.61%9.1CVE-2024-20521Cisco rv042 firmware stack-based buffer overflow vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, A…EPSS 0.66%9.1CVE-2024-20518Cisco rv042 firmware stack-based buffer overflow vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, A…EPSS 0.61%9.1CVE-2024-20519Cisco rv042 firmware stack-based buffer overflow vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, A…EPSS 0.61%7.2CVE-2023-20124Cisco rv016 firmware command injection vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an au…EPSS 0.96%7.2CVE-2023-20026Cisco rv016 firmware command injection vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320 and RV325 Routers could allow an aut…EPSS 1.3%7.2CVE-2020-3290Cisco rv016 firmware memory buffer overflow vulnerabilityMultiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers and Cisco Small Business RV016,…EPSS 3.2%

Source: NIST National Vulnerability Database (record CVE-2023-20025), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.