Exploited CVEs / Cisco / CVE-2020-3153
CVE-2020-3153
Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2022-11-14 (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 AnyConnect Secure vulnerability, Medium severity, CVSS 6.5. Added to the CISA KEV catalog 2022-10-24.
Risk summary
Updated July 27, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2020-3153
This is a local privilege escalation flaw in Cisco AnyConnect Secure Mobility Client for Windows where mishandled directory paths let an authenticated user copy malicious files, including DLLs for pre-loading, to arbitrary locations and gain system level privileges. Despite a Medium severity rating (CVSS 6.5), it is confirmed on CISA KEV and has been used in ransomware campaigns, so the real world risk exceeds the score. Any Windows endpoint still running an unpatched AnyConnect client is exposed to a local attacker who already has valid credentials.
Do this: Inventory all Windows machines running Cisco AnyConnect and update the client to a Cisco-fixed release for this vulnerability.
AI-generated from public data, 2026-07-25. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2020-3153
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2020-3153
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: 2022-11-14 (past due).
Apply updates per vendor instructions.
Official fix for CVE-2020-3153
The authoritative fix and affected-version list are published by the vendor. Find the AnyConnect Secure advisory on Cisco Security Advisories (PSIRT).
Common questions about CVE-2020-3153
Is CVE-2020-3153 actively exploited?
Yes. CVE-2020-3153 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2022-10-24, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 27%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2020-3153?
CISA set the federal (BOD 22-01) remediation due date at 2022-11-14, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.
What fixes CVE-2020-3153?
The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched AnyConnect Secure 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-2020-3153?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2020-3153'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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