Is CVE-2026-20133 actively exploited?

Yes. CVE-2026-20133 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2026-20133 be exploited remotely?

Yes. CVE-2026-20133 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-20133?

CVE-2026-20133 has a CVSS score of 6.5 (MEDIUM) and an EPSS exploitation probability of 0.03%.

HOME VULNERABILITIESCVE-2026-20133

MEDIUMCISA KEVIN THE WILD

CVE-2026-20133

CWE-200Published: February 25, 2026· Updated: Feb 27, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.2th

Official Description

A vulnerability in Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to view sensitive information on an affected system.

This vulnerability is due to insufficient file system access restrictions. An attacker could exploit this vulnerability by accessing the API of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.

NVD Source

Technical Analysis

CVE-2026-20133 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

CISA has added CVE-2026-20133 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Affected Vendors & Products

Mentioned vendors (from description):

Cisco

CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2026-20133

CISA Adds Eight Known Exploited Vulnerabilities to Catalog

CISA Alerts· Apr 20, 2026

CISA has added eight new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2023-27351 PaperCut NG/MF Improper Authentication Vulnerability CVE-2024-27199 JetBrains TeamCity Relative Path Traversal Vulnerability CVE-2025-2749 Kentico Xperience Path Traversal Vulnerability CVE-2025-32975 Quest KACE Systems Management Appliance (SMA) Improper Authentication Vulnerability CVE-2025-48700 Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability CVE-2026-20122 Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability CVE-2026-20128 Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability CVE-2026-20133 Cisco Catalyst SD-WAN Ma [xlite_meta score:63 src:CISA Alerts xlite_fp:0b55e79970c47e4ece69ce1dd3660bb43f47c536c063390ae3b0b0034a186fa0]