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ExploitedIn CISA KEV

CVE-2023-20118

Exploitation confirmed. First attested on 2025-03-03 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2023-04-13
  • WeaknessCWE-77

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 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"])}]]

Timeline

dates in UTC
  1. 2023-04-1307:15CVE publishedNVD
  2. 2025-03-03Added to the CISA KEV catalogCISA KEV
  3. 2025-03-03Listed as exploited by GCVEGCVE
  4. 2025-03-03Exploitation first reportedCISA KEV
  5. 2025-03-0320:12SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 09:37 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-2023-20118?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20118?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
BranchAffectedFixed in
—all versionsno fix published
Cisco rv042 firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Cisco rv042g firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

3 more products in the sources.

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

Products declared by the CNA1 product

As cisco, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Cisco Small Business RV Series Router Firmware
    Affected
    • = 1.0.1.17no fix stated
    • = 1.0.2.03no fix stated
    • = 1.1.0.09no fix stated
    • = 1.1.1.19no fix stated
    • = 1.1.1.06no fix stated
    • = 1.2.1.13no fix stated
    • = 1.2.1.14no fix stated
    • = 1.3.1.12no fix stated

    10 more version lines in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-03-12

Fix

  1. 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.due 2025-03-24

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-03-03
Patch Due Date
2025-03-24
Ransomware Use
Unknown
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.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2023-04-13
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-gr43-pwpc-mp54

Frequently asked questions

What is CVE-2023-20118?

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"])}]]

Is CVE-2023-20118 actively exploited?

Yes. CVE-2023-20118 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-03-24.

What is the CVSS score for CVE-2023-20118?

CVE-2023-20118 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record