Exploited CVEs / Cisco / CVE-2026-20262

CVE-2026-20262

Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2026-06-29 (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.

Risk summary

MediumCISA KEV

6.5

CVSS v3 base

28%

EPSS exploit probability

Medium

Severity

2026-06-15

Added to KEV

2026-06-29 (past due)

CISA due date

Actively exploited Cisco Catalyst SD-WAN Manager vulnerability, Medium severity, CVSS v3 6.5. Added to the CISA KEV catalog 2026-06-15.

Senserva AI read on CVE-2026-20262 CISA required action Official fix for CVE-2026-20262 Admin questions

Senserva AI Opinion for CVE-2026-20262

Do not let the Medium Severity rating (CVSS 6.5) fool you: this Cisco Catalyst SD-WAN Manager path traversal is in the KEV catalog as of 2026-06-15, so attackers are already using it. An authenticated remote attacker can create or overwrite any file on the filesystem, which is a practical route to persistence or privilege escalation on the appliance that manages your WAN. It pairs dangerously with the several SD-WAN Manager credential and bypass flaws already in KEV.

Do this: Patch Catalyst SD-WAN Manager and review its user accounts, since exploitation requires credentials an attacker may already have harvested.

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

Senserva AI Opinion and rich prompt for CVE-2026-20262

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

I run IT security. Facts for CVE-2026-20262, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2026-20262.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2026-20262: Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability
- Affected: Cisco Catalyst SD-WAN Manager
- Severity: Medium, CVSS v3 6.5; EPSS 30-day exploitation probability 28%
- Added to CISA KEV: 2026-06-15; federal remediation due 2026-06-29
- Ransomware-linked: no
- CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or dis...
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

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 2026-06-29; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated August 29, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2026-20262

Published: 2026-06-15
Last revised: 2026-06-15
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.

Senserva Watchevery change we have recorded for this one

What changed, and when

The strongest signal is EPSS, which jumped from 7.7% to 28.2% on 2026-07-24, nearly quadrupling in a week. Earlier, on 2026-07-17, Senserva recorded CVSS moving from 0.0 to 6.5 Severity with EPSS first scored at 7.7%. The direction is a rising exploitation likelihood, so prioritize patching this today.

2026-06-15 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 6.5; EPSS first scored at 7.7%
2026-07-24 EPSS 7.7% to 28.2%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2026-06-29 (past due).

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Official fix for CVE-2026-20262

The authoritative fix and affected-version list are published by the vendor. Find the Catalyst SD-WAN Manager advisory on Cisco Security Advisories (PSIRT).

Cisco Security Advisories (PSIRT)CISA KEV entry

Common questions about CVE-2026-20262

Is CVE-2026-20262 actively exploited?

Yes. CVE-2026-20262 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2026-06-15, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 28%.

What is the CISA deadline and required action for CVE-2026-20262?

CISA set the federal (BOD 22-01) remediation due date at 2026-06-29, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

What fixes CVE-2026-20262?

The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched Catalyst SD-WAN Manager 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-2026-20262?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2026-20262'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).

Scope and sources

More exploited Cisco CVEs: CVE-2026-20349 CVE-2026-20316 CVE-2008-4128 CVE-2026-20230 CVE-2026-20245 CVE-2026-20182 CVE-2026-20133 CVE-2026-20122
All Cisco exploited CVEs on one page: Cisco vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

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