PT-2026-40711 · Palo Alto Networks · Pan-Os

CVE-2026-0263 · Published 2026-05-13 · Updated 2026-05-19

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Palo Alto Networks PAN-OS (affected versions not specified)

Description A buffer overflow in the IKEv2 processing allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall or cause a denial of service (DoS) condition. A buffer overflow occurs when a program writes more data to a block of memory, or buffer, than it is designed to hold, potentially overwriting adjacent memory locations.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2026-07382

CVE-2026-0263

Affected Products

Pan-Os

References · 8

• https://bdu.fstec.ru/vul/2026-07382 · Security Note
• https://security.paloaltonetworks.com/CVE-2026-0263 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0263 · Security Note
• https://twitter.com/vuldb/status/2055066667907252718 · Twitter Post
• https://reddit.com/r/paloaltonetworks/comments/1ti4crw/panos_1117h6_11110h26_11113h6_1124h17_1127h15 · Reddit Post
• https://twitter.com/the_yellow_fall/status/2054859447663788380 · Twitter Post
• https://twitter.com/vuldb/status/2054962231910265050 · Twitter Post
• https://twitter.com/threatcluster/status/2054660769459904998 · Twitter Post