Exploited CVEs / Cisco / CVE-2023-20118
CVE-2023-20118
Cisco Small Business RV Series Routers Command Injection Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-03-24 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Cisco Security Advisories (PSIRT), linked below.
Actively exploited Cisco Small Business RV Series Routers vulnerability, High severity, CVSS 7.2. Added to the CISA KEV catalog 2025-03-03.
Risk summary
Updated July 27, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2023-20118
Cisco Small Business RV series routers have a command injection in their web management interface that hands authenticated attackers root, and these devices sit at the edge of exactly the small branch offices least likely to patch them. Exploitation was confirmed in March 2025, roughly two years after disclosure, consistent with botnet operators sweeping up aging SMB gear. Several RV models are past end of support, so some affected units will never see a fix.
Do this: Inventory RV series routers at branch and small office sites, patch the supported ones, and replace the end-of-support models outright.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2023-20118
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2023-20118
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2025-03-24 (past due).
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2023-20118
The authoritative fix and affected-version list are published by the vendor. Find the Small Business RV Series Routers advisory on Cisco Security Advisories (PSIRT).
Common questions about CVE-2023-20118
Is CVE-2023-20118 actively exploited?
Yes. CVE-2023-20118 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-03-03, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 54%.
What is the CISA deadline and required action for CVE-2023-20118?
CISA set the federal (BOD 22-01) remediation due date at 2025-03-24, which has passed; treat any unremediated system as overdue. The verbatim 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.
What fixes CVE-2023-20118?
The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched Small Business RV Series Routers versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2023-20118?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-20118's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
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