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CISA KEV · Known exploitedHigh

CVE-2023-20118

Cisco Small Business RV Series Routers

A vulnerability in the web-based management interface of Cisco Small Business Routers RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands 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 gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacke...

CVSS
7.2
EPSS
54.1%
98.9% percentile
CISA KEV
Listed
Published
2023.04.13
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability54.1%
Technical severityCVSS 7.2

Vulnerability overview

A vulnerability in the web-based management interface of Cisco Small Business Routers RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands 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 gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacke...

Affected product and versions

Product
Cisco Small Business RV Series Routers
Affected versions
1.0.1.17, 1.0.2.03, 1.1.0.09, 1.1.1.19, 1.1.1.06, 1.2.1.13, 1.2.1.14, 1.3.1.12, 1.3.2.02, 1.3.1.10, 1.4.2.15, 1.4.2.17, 1.4.2.19, 1.4.2.20, 1.4.2.22, 1.5.1.05, 1.5.1.11, 1.5.1.13
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Due date: 2025.03.24
  1. 1
    Identify

    Confirm that Cisco Small Business RV Series Routers and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-77
KEV added
2025.03.03
Ransomware use
미확인
CVE-2023-20118 — Cisco Small Business RV Series Routers | SECUFOCUS NOW