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Known exploited vulnerability

CVE-2023-20118

highCVSS 3.1 7.2In CISA KEVEPSS 54%Published · Cisco

The short answer

CVE-2023-20118 affects Cisco Cisco Small Business RV Series Router Firmware and is rated high (CVSS 7.2). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-03-03: attackers are using it, so patch it first.

What it is

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 attacker would need to have valid administrative credentials on the affected device. Cisco has not and will not release software updates that address this vulnerability. However, administrators may disable the affected feature as described in the Workarounds ["#workarounds"] section. {{value}} ["%7b%7bvalue%7d%7d"])}]]

Weakness: CWE-77.

Severity

7.2 high

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

Exploited (CISA KEV)

Yes, since Mar 3, 2025

Federal due date Mar 24, 2025

EPSS, next 30 days

54%

Higher than 99% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

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

Affected products

Cisco Small Business RV Series Router Firmware. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2023-20118 being exploited?

Yes. CISA added CVE-2023-20118 to its Known Exploited Vulnerabilities catalog on 2025-03-03, with a federal remediation due date of 2025-03-24.

How do I fix CVE-2023-20118?

CISA's 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.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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