CVE-2026-0269 | PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing

A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN-OS® software allows an authenticated user to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode. Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.

Published: 2026-06-10 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Undergoing Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-0269 is rated Low Risk (21.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-0269

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.18% +0.17%
2 2026-06-11 — 0.02% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-0269

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 4.0 MEDIUM
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:Amber Click to expand
Attack vector (AV:A)
Attacker has to be on an adjacent/local network segment.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:U)
Unreported: no public PoC, no reported exploitation, and no known simplification tools.
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:N)
No: attackers cannot reliably automate reconnaissance through exploitation for this issue.
Recovery (supplemental) (R:A)
Automatic: services recover on their own after an attack.
Value density (supplemental) (V:D)
Diffuse: a single exploit event controls relatively limited resources (e.g., one client).
Vulnerability response effort (supplemental) (RE:M)
Moderate effort (remote update, disable subsystem, simple upgrade with minor service impact).
Provider urgency (supplemental) (U:AMBER)
Amber: provider rates moderate urgency.
 — — [email protected]

Weakness enumeration for CVE-2026-0269

GitHub Security Advisory for CVE-2026-0269

GHSA-v62p-f565-pfxr · Severity: medium — A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN...

Affected software / configurations for CVE-2026-0269

Vendor Product Version Raw CPE
palo_alto_networks pan-os >= 12.1.0, < 12.1.5 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 12.1.4, < 12.1.4-h5 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.2.0, < 11.2.10 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.2.7, < 11.2.7-h4 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.2.4, < 11.2.4-h17 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.1.0, < 11.1.12 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.1.10, < 11.1.10-h7 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.1.6, < 11.1.6-h21 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 11.1.4, < 11.1.4-h33 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 10.2.0, < 10.2.18 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 10.2.16, < 10.2.16-h6 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 10.2.13, < 10.2.13-h21 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 10.2.10, < 10.2.10-h36 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*
palo_alto_networks pan-os >= 10.2.7, < 10.2.7-h34 cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*

References for CVE-2026-0269

cvelogic Threat Intelligence