CVE-2026-0287: PAN-OS: Denial of Service Vulnerabilities in Network Traffic Processing

Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available

What, why and how

Multiple denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic to or through a dataplane interface. Repeated attempts to trigger this condition result in the firewall entering maintenance mode. Panorama is not impacted by these vulnerabilities.

What

Why

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

Why

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: a network path → Improper Check for Unusual or Exceptional Conditions → disrupt the affected service
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Not a CVSS 4.0 base metric
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-754 ↗
CWE-754: Improper Check for Unusual or Exceptional Conditions. The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: 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
Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedDenial of serviceCWE-754

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-42672Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

BSI · German · WID-SEC-2026-2261Palo Alto Networks PAN-OS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Palo Alto Networks PAN-OS ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0853Multiples vulnérabilités dans les produits Palo Alto Networks

6-0278 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0279 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0280 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0281 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0282 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0283 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0284 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0285 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0286 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0287 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks CVE-2026-0288 du 08 juillet 2026 Bulletin de sécurité Palo Alto Networks PAN-SA-2026-0010 du 08 juillet 2026 Une gestion de version détaillée se trouve à la fin de ce document. Risques Atteinte à l'intégrité des données Atteinte à la confidentialité des données Contournement de la politique de sécurité Déni de service à distance Exécution de code arbitraire à distance Falsification de requêtes côté serveur (SSRF) Injection de code indirecte à distance (XSS) Non spécifié par l'éditeur Élévation de privilèges Systèmes affectés Cortex XDR Broker VM versions 20.0.96 antérieures à 31.0.58

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2026-023590Palo Alto NetworksのCloud NGFW for Azure等の複数製品における例外的な状態のチェックに関する脆弱性

Palo Alto Networks PAN-OS ソフトウェアに複数のサービス拒否（DoS）脆弱性が存在し、認証されていないネットワークアクセスを持つ攻撃者が、特別に細工されたネットワークトラフィックをデータプレーンインターフェイスに送信することでサービス拒否状態を引き起こす可能性があります。この条件を繰り返し引き起こそうとすると、ファイアウォールがメンテナンスモードに入ります。 Panorama はこれらの脆弱性の影響を受けません。

Official advisory ↗

NCSC-NL · Dutch · NCSC-2026-0227Kwetsbaarheden verholpen in Palo Alto Networks PAN-OS

Multiple denial of service vulnerabilities in Palo Alto Networks PAN-OS allow unauthenticated attackers with network access to cause a DoS condition and force the firewall into maintenance mode, with Panorama unaffected.

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: RUGGEDCOM APE1808 with Palo Alto Networks Virtual NGFW
Fixed: VersionMinor Version RangeSuggested SolutionCloud NGFW
Customers who prefer to upgrade can work with Palo Alto Networks support to schedule an on-demand software upgrade.PAN-OS 12.112.1.5 through 12.1.7-h*Upgrade to 12.1.7-h2 or 12.1.8 or later.
12.1.2 through 12.1.4-h*Upgrade to 12.1.4-h8 or 12.1.8 or later.PAN-OS 11.211.2.11 through 11.2.12Upgrade to 11.2.13 or later.
11.2.8 through 11.2.10-h*Upgrade to 11.2.10-h12 or 11.2.13 or later.
11.2.5 through 11.2.7-h*Upgrade to 11.2.7-h18 or 11.2.13 or later.
11.2.0 through 11.2.4-h*Upgrade to 11.2.4-h20 or 11.2.13 or later.PAN-OS 11.111.1.14 through 11.1.15Upgrade to 11.1.16 or later.
11.1.11 through 11.1.13-h*Upgrade to 11.1.13-h9 or 11.1.16 or later.
11.1.8 through 11.1.10-h*Upgrade to 11.1.10-h30 or 11.1.16 or later.
11.1.7 through 11.1.7-h*Upgrade to 11.1.7-h8 or 11.1.16 or later.
11.1.5 through 11.1.6-h*Upgrade to 11.1.6-h35 or 11.1.16 or later.
11.1.0 through 11.1.4-h*Upgrade to 11.1.4-h35 or 11.1.16 or later.PAN-OS 10.210.2.17 through 10.2.18-h*Upgrade to 10.2.18-h8 or later.
10.2.14 through 10.2.16-h*Upgrade to 10.2.16-h9 or later.
Action: Contact customer support to receive patch and update information
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 9 Jul 2026 · Last source change 11 Aug 2026, 12:23 UTC · CWE-754 · Improper Check for Unusual or Exceptional Conditions

CVE recordCVE.org · 5.2

CVSS sourceCNA

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2026-42672

Product sourceVendor CSAF · Siemens ProductCERT

Remediation sourceVendor CSAF · Siemens ProductCERT

CWE sourceCNA

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2026-07-09CVE published

ENISA EUVD · EUVD-2026-42672↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

PAN-OS: Denial of Service Vulnerabilities in Network Traffic Processing

Authoritative vendor CSAF and VEX advisories

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2026-42672

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication

PAN-OS: Denial of Service Vulnerabilities in Network Traffic Processing

National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

EUVD-2026-42672

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.