Exploited CVEs / Cisco / CVE-2018-0161

CVE-2018-0161

Cisco IOS Software Resource Management Errors Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2022-03-17 (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.

MediumCISA KEV

Actively exploited Cisco IOS Software vulnerability, Medium severity, CVSS 6.3. Added to the CISA KEV catalog 2022-03-03.

Senserva AI read on CVE-2018-0161CISA required actionOfficial fix for CVE-2018-0161Admin questions

Risk summary

CVSS base
6.3
EPSS exploit probability
4.7%
Severity
Medium
Added to KEV
2022-03-03
CISA due date
2022-03-17 (past due)
Patch now
Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.
The fix ships from the vendor: Cisco Security Advisories (PSIRT).
Do this now: Federal remediation deadline 2022-03-17; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated July 27, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Senserva AI Opinion for CVE-2018-0161

Certain Cisco Catalyst switches running IOS can be forced into denial of service through the SNMP subsystem by an authenticated remote attacker, one of the quieter entries in the March 2022 Cisco KEV batch. SNMP community strings are notoriously weak or shared, so the authentication bar is lower than it sounds. Severity is Medium at CVSS 6.3.

Do this: Rotate SNMP community strings, restrict SNMP to management hosts, and patch the affected Catalyst switch models.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2018-0161

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for CVE-2018-0161

Published
2022-03-03
Last revised
2022-03-03
Changes tracked
1

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: 2022-03-17 (past due).

Apply updates per vendor instructions.

Official fix for CVE-2018-0161

The authoritative fix and affected-version list are published by the vendor. Find the IOS Software advisory on Cisco Security Advisories (PSIRT).

Cisco Security Advisories (PSIRT)CISA KEV entry

Common questions about CVE-2018-0161

Is CVE-2018-0161 actively exploited?

Yes. CVE-2018-0161 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2022-03-03, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 4.7%.

What is the CISA deadline and required action for CVE-2018-0161?

CISA set the federal (BOD 22-01) remediation due date at 2022-03-17, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.

What fixes CVE-2018-0161?

The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched IOS Software 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-2018-0161?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2018-0161'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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Authoritative references

CVE recordNVD detailCISA KEV catalogFIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.

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Lexicon: the terms on this page
CVE
Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB
Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV
CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS
Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS
Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC
Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD
National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware
The vulnerability is linked to known ransomware activity.
Reference: Microsoft CVE and vulnerability management, the full CVE-to-patch lookup ranked by real-world risk, and the Microsoft patching guide, how Intune, Windows Autopatch, Defender, and Azure Update Manager fit together.
Data notice: this page, the feeds, and the API are provided as is, for informational purposes only, without warranty of any kind. Senserva, LLC does not guarantee the accuracy, completeness, or timeliness of third-party data (MSRC, NVD, CISA KEV, EPSS) and accepts no liability for actions taken based on it; verify against the authoritative vendor advisory before acting. Built daily with Senserva Trustworthy AI. All use of this data is subject to the Senserva EULA.