ExploitedIn CISA KEVFix available

CVE-2026-0257

Q: Is CVE-2026-0257 actively exploited?

Yes. CVE-2026-0257 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-01.

Q: What is the CVSS score for CVE-2026-0257?

CVE-2026-0257 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Exploitation confirmed. First attested on 2026-05-29 by CISA-ADP, CISA KEV, GCVE · circl incident response, GCVE · kevintel.

Published2026-05-13
Fixed in10.2.7
WeaknessCWE-565

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

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

Timeline

dates in UTC

2026-05-1319:17CVE publishedNVD
2026-05-29Listed as exploited by GCVEGCVE
2026-05-29Exploitation first reportedCISA KEV
2026-05-29Added to the CISA KEV catalogCISA KEV
2026-05-2919:19SSVC exploitation set to activeCISA-ADP
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2026-0257?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-0257?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
10.2	< 10.2.7	10.2.7	NVD
10.2	= 10.2.7	no fix published	NVD
10.2	= 10.2.8	no fix published	NVD
10.2	= 10.2.9	no fix published	NVD
10.2	= 10.2.10	no fix published	NVD
10.2	= 10.2.11	no fix published	NVD
10.2	= 10.2.12	no fix published	NVD
10.2	= 10.2.13	no fix published	NVD
10.2	= 10.2.14	no fix published	NVD
10.2	= 10.2.15	no fix published	NVD
10.2	= 10.2.16	no fix published	NVD
10.2	= 10.2.17	no fix published	NVD

Paloaltonetworks prisma accessversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Siemens ruggedcom ape1808 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

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

Fix

Update Palo Alto PAN-OS to 10.2.7
CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2026-06-01

Advisories and patches

security.paloaltonetworks.comVendor Advisory

Detection

read 2026-10-23 19:24 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 7 repositories, unverifiedsfewer-r7/CVE-2026-0257akashsingh0454/CVE-2026-0257-PoCHORKimhab/CVE-2026-02570xBlackash/CVE-2026-0257tushargurav28/CVE-2026-0257

CISA Known Exploited Vulnerability

Date Added: 2026-05-29
Patch Due Date: 2026-06-01
Ransomware Use: Unknown
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

CISA KEVKEV entry2026-05-29
GCVEexploitation2026-05-29
CISA-ADPSSVC decisionactive2026-05-29
OpenCVESSVC decisionactive—
CNACVSS 4.07.8read 2026-10-23
NVDCVSS 3.19.1read 2026-10-23
CNAweakness (CWE)CWE-565read 2026-10-23
FIRST EPSSEPSS score96.9 %read 2026-10-23
PoC-in-GitHubproof of concept7read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/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:Red
Published: 2026-05-13
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-0257?

Is CVE-2026-0257 actively exploited?

Yes. CVE-2026-0257 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-01.

What is the CVSS score for CVE-2026-0257?

CVE-2026-0257 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

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