No exploitation reportedFix available

CVE-2026-0288

Q: Is CVE-2026-0288 actively exploited?

Active exploitation of CVE-2026-0288 has not been confirmed. Its EPSS score was 0.8% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-0288?

CVE-2026-0288 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2026-07-08
Fixed in12.1.7 · 12.1.4 · 11.2.13 · 11.2.10 · 11.2.7 · 11.2.4
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Multiple buffer overflow vulnerabilities in the User-ID Terminal Server Agent (TSA) component of Palo Alto Networks PAN-OS software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic. The security risk posed by this issue is minimized when the User-ID Terminal Server Agent connectivity is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://docs.paloaltonetworks.com/ngfw/help/10-2/user-identification/device-user-identification-terminal-services-agents#:~:text=To%20minimize%20security%20risk%2C%20restrict%20TS%20Agent%20connectivity%20to%20trusted%20internal%20IP%20addresses%20only. . Panorama is not impacted by this vulnerability.

Timeline

dates in UTC

2026-07-0821:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-0288?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-0288?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Palo Alto PAN-OS

Branch	Affected	Fixed in	Source
12.1	≥ 12.1.5, < 12.1.7	12.1.7	NVD
12.1	≥ 12.1.2, < 12.1.4	12.1.4	NVD
11.2	≥ 11.2.11, < 11.2.13	11.2.13	NVD
11.2	≥ 11.2.8, < 11.2.10	11.2.10	NVD
11.2	≥ 11.2.5, < 11.2.7	11.2.7	NVD
11.2	≥ 11.2.0, < 11.2.4	11.2.4	NVD
11.1	≥ 11.1.14, < 11.1.16	11.1.16	NVD
11.1	≥ 11.1.11, < 11.1.13	11.1.13	NVD
11.1	≥ 11.1.8, < 11.1.10	11.1.10	NVD
11.1	≥ 11.1.0, < 11.1.4	11.1.4	NVD
10.2	≥ 10.2.14, < 10.2.16	10.2.16	NVD
10.2	≥ 10.2.11, < 10.2.13	10.2.13	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

SSA-104023 Siemens ProductCERT1 known affected
SSA-104023: Multiple Vulnerabilities in Palo Alto Networks PAN-OS on RUGGEDCOM APE1808 Devices
RUGGEDCOM APE1808 with Palo Alto Networks Virtual NGFW

Full record on NVD

Fix

Update Palo Alto PAN-OS to 12.1.7 · 12.1.4 · 11.2.13 · 11.2.10 · 11.2.7 · 11.2.4 · 11.1.16 · 11.1.13
Vendor fix Siemens ProductCERT SSA-104023 · 1 productContact customer support to receive patch and update information

Advisories and patches

security.paloaltonetworks.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-07-09
OpenCVESSVC decisionnone—
CNACVSS 4.07.2read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score0.8 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:U/V:D/RE:M/U:Red
Published: 2026-07-08
Last Modified: 2026-08-11
NVD status: Modified

Frequently asked questions

What is CVE-2026-0288?

Is CVE-2026-0288 actively exploited?

Active exploitation of CVE-2026-0288 has not been confirmed. Its EPSS score was 0.8% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-0288?

CVE-2026-0288 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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