Yesterday, CISA announced that it had added an out-of-bounds write vulnerability in the Palo Alto Networks PAN-OS product to their Known Exploited Vulnerabilities (KEV) catalog. Earlier yesterday, the vulnerability was disclosed by PAN. Fixes are planned for next week. PAN reports that customers with a Threat Prevention subscription can block attacks for this vulnerability.
CISA has directed that federal agencies apply “mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.” In an untypical move, they added the following to the above boilerplate:
“Until the vendor releases an official fix, the following workaround should be implemented: - Restrict User-ID Authentication Portal access to only trusted zones. - Disable User-ID Authentication Portal if not required.”
CISA has provided a 3-day deadline of May 9th, 2026, to accomplish the above actions.
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