Status: KEV | Advisory ID: CVE-2026-0257
| CVE | CVE-2026-0257 |
| Affected products | Siemens RUGGEDCOM APE1808 Firmware, Palo Alto Networks Prisma Access, and Palo Alto Networks PAN-OS |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| Classified as | CWE-565 (Reliance on Cookies without Validation and Integrity Checking) |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-05-29. |
| Exploitation prediction (EPSS) | 95% probability of exploitation in the next 30 days (100% percentile) -- FIRST.org's EPSS model. |
| Federal remediation deadline | 2026-06-01 (CISA KEV, Binding Operational Directive). |
Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-0257 |