Security readout for executives and security teams
Plain-English summary
CVE-2026-0262 is a Palo Alto Networks PAN-OS traffic-parsing issue that can let an unauthenticated network attacker disrupt firewall availability using crafted network traffic. The reported impact is denial of service, not data theft or code execution. Panorama and Cloud NGFW are stated as not impacted.
Executive priority
Schedule remediation through normal urgent maintenance for exposed PAN-OS firewalls. This is not presented as actively exploited, but it can affect firewall availability, making perimeter and business-critical network paths the priority.
Technical view
The vulnerability group affects PAN-OS network traffic parsing and maps to CWE-754. CVSS v4.0 is 6.6 with network attack vector, low complexity, no privileges, no user interaction, and high vulnerable-system availability impact. The supplied data lists PAN-OS 10.2, 11.1, 11.2, and 12.1 version lines.
Likely exposure
Exposure is most relevant to network-reachable Palo Alto Networks firewalls running affected PAN-OS versions, especially perimeter devices processing untrusted traffic. The supplied sources state Panorama and Cloud NGFW are not impacted, and list Prisma Access as unaffected.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. The CVSS vector marks exploit maturity as unproven. Treat this as a credible availability risk because exploitation is remote, unauthenticated, and targets traffic parsing.
Researcher notes
Evidence is limited to advisory-level details. The bundle does not name fixed versions, packet formats, logs, or workarounds. Avoid exploit reproduction; focus on version validation, exposure mapping, availability telemetry, and vendor guidance.
Mitigation direction
- Identify PAN-OS appliances and versions in the affected 10.2, 11.1, 11.2, and 12.1 lines.
- Review Palo Alto Networks advisory for fixed releases or vendor-supported mitigations.
- Prioritize perimeter firewalls and devices processing untrusted network traffic.
- Ensure HA failover, monitoring, and support escalation paths are operational.
- Confirm Panorama and Cloud NGFW are excluded before removing them from scope.
Validation and detection
- Inventory PAN-OS versions from asset management and firewall administration records.
- Compare discovered versions against the vendor advisory and CVE record.
- Check whether exposed appliances process internet-originated or untrusted partner traffic.
- Review monitoring for unexplained PAN-OS service restarts or availability events.
- Document unaffected Panorama, Cloud NGFW, and Prisma Access findings separately.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-754: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-0262 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.6 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:C/RE:M/U:Amber
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:C/RE:M/U:Amber——palo_altoVulnerability scoring details
Base CVSS 4.0 score
6.6MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:C/RE:M/U:Amber
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelinepalo_alto
Initial publication.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://security.paloaltonetworks.com/CVE-2026-0262CVE reference, palo_alto · vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-967325.htmlCVE reference, siemens-SADP
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Check for Unusual or Exceptional Conditions
Improper Check for Unusual or Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.