CVE-2026-0331
PAN-OS: Sensitive Information Disclosure Vulnerability
An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated remote attacker with network access to obtain sensitive firewall and session information by sending traffic to or through a dataplane interface. Panorama is not affected by this vulnerability.
Fixes and workarounds
Fix
VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW Customers who prefer to upgrade can work with Palo Alto Networks support to schedule an on-demand software upgrade. PAN-OS 12.2 12.2.0 through 12.2.4-h* Upgrade to 12.2.4-h2 or later. PAN-OS 12.1 12.1.8 through 12.1.10-h* Upgrade to 12.1.10-h4 or later. 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h12 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h14 or later. PAN-OS 11.2 11.2.15 through 11.2.16-h* Upgrade to 11.2.16-h2 or later. 11.2.11 through 11.2.13-h* Upgrade to 11.2.13-h5 or 11.2.16-h2 or later. 11.2.8 through 11.2.10-h* Upgrade to 11.2.10-h18 or 11.2.16-h2 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h24 or 11.2.16-h2 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h24 or 11.2.16-h2 or later. PAN-OS 11.1 11.1.14 through 11.1.16-h* Upgrade to 11.1.16-h5 or later. 11.1.11 through 11.1.13-h* Upgrade to 11.1.13-h17 or 11.1.16-h5 or later. 11.1.8 through 11.1.10-h* Upgrade to 11.1.10-h37 or 11.1.16-h5 or later. 11.1.7 through 11.1.7-h* Upgrade to 11.1.7-h13 or 11.1.16-h5 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h41 or 11.1.16-h5 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h39 or 11.1.16-h5 or later. PAN-OS 10.2 10.2.17 through 10.2.18-h* Upgrade to 10.2.18-h14 or later. 10.2.14 through 10.2.16-h* Upgrade to 10.2.16-h13 or 10.2.18-h14 or later. 10.2.11 through 10.2.13-h* Upgrade to 10.2.13-h28 or 10.2.18-h14 or later. 10.2.8 through 10.2.10-h* Upgrade to 10.2.10-h43 or 10.2.18-h14 or later. 10.2.0 through 10.2.7-h* Upgrade to 10.2.7-h40 or 10.2.18-h14 or later. All older Upgrade to a supported fixed version. unsupported PAN-OS versions Prisma Access 12.1 12.1.2 through 12.1.10-h* Upgrade to 12.1.10-h4 or later. Prisma Access 11.2 11.2.0 through 11.2.7-h* Upgrade to 11.2.7-h24 or later. Prisma Access 10.2 10.2.0 through 10.2.10-h* Upgrade to 10.2.10-h43 or later. * See the note under Product Status for information regarding Prisma Access upgrades.
Source: CNA: palo_altoWorkaround
No known workarounds exist for this issue.
Source: CNA: palo_altoAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Cloud NGFW Palo Alto Networks |
All (affected, custom)
Other versions: unaffected |
CNA: palo_alto |
| PAN-OS Palo Alto Networks |
≥ 12.2.0; < 12.2.4-h2 (affected, custom); unaffected at 12.2.4-h2 ≥ 12.1.0; < 12.1.10-h4 (affected, custom); unaffected at 12.1.10-h4; unaffected at 12.1.7-h12; unaffected at 12.1.4-h14 ≥ 11.2.0; < 11.2.16-h2 (affected, custom); unaffected at 11.2.16-h2; unaffected at 11.2.13-h5; unaffected at 11.2.10-h18; unaffected at 11.2.7-h24; unaffected at 11.2.4-h24 ≥ 11.1.0; < 11.1.16-h5 (affected, custom); unaffected at 11.1.16-h5; unaffected at 11.1.13-h17; unaffected at 11.1.10-h37; unaffected at 11.1.7-h13; unaffected at 11.1.6-h41; unaffected at 11.1.4-h39 ≥ 10.2.0; < 10.2.18-h14 (affected, custom); unaffected at 10.2.18-h14; unaffected at 10.2.16-h13; unaffected at 10.2.13-h28; unaffected at 10.2.10-h43; unaffected at 10.2.7-h40 Other versions: unaffected |
CNA: palo_alto |
| Prisma Access Palo Alto Networks |
≥ 12.1.0; < 12.1.10-h4 (affected, custom); unaffected at 12.1.10-h4 ≥ 11.2.0; < 11.2.7-h24 (affected, custom); unaffected at 11.2.7-h24 ≥ 10.2.0; < 10.2.10-h43 (affected, custom); unaffected at 10.2.10-h43 Other versions: unaffected |
CNA: palo_alto |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.6 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber | CNA: palo_alto |
| 4.0 / 4.6 medium |
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber | CNA: palo_alto |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://security.paloaltonetworks.com/CVE-2026-0331CNA: palo_alto · vendor-advisory
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