SEPTEMBER 14, 2026
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Case File

CVE-2026-0257

CRITICAL · CVSS 9.1 EPSS 93.91% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-13 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects Palo Alto, PAN-OS. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild. Its EPSS score suggests a 93.9% probability of exploitation in the next 30 days.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Known

Added to KEV: 2026-05-29

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.

CVE
CVE-2026-0257
Severity
CRITICAL
CVSS
9.1
EPSS
93.91%
Palo Alto PAN-OS

Original NVD Description

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OSĀ® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

Related CVEs

Other vulnerabilities affecting the same vendor(s)