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Prisma Access Agent EUVDEUVD-2026-75258

| CVE-2026-0306 MEDIUM
Protection Mechanism Failure (CWE-693)
2026-09-10 palo_alto GHSA-f733-7236-frjq
5.8
CVSS 4.0 · Vendor: palo_alto
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain local user session on Windows endpoint
  2. Delivery
    Identify DLP enforcement bypass mechanism in Prisma Access Agent
  3. Exploit
    Stage sensitive data targeted by DLP policy
  4. Execution
    Execute bypass to evade local DLP inspection
  5. Impact
    Exfiltrate data to external destination

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
Exploitation Conditions

Exploitation requires a local, low-privileged user account on a Windows system with the Palo Alto Networks Prisma Access Agent installed and EndPoint DLP enforcement actively configured. The attack is strictly limited to the Windows platform - the vendor confirms that macOS, Linux, iOS, Android, and Chrome OS deployments of the Prisma Access Agent are not affected. No network access to the system is required beyond the attacker's existing local or remote desktop session. Limiting factors include: physical or RDP access to a managed Windows endpoint, presence of the Prisma Access Agent with DLP policies configured, and the absence of supplemental server-side or network-layer DLP controls that would catch exfiltration regardless of endpoint bypass.

Impact

The CVSS 4.0 score of 5.8 accurately reflects the constrained attack surface: local access is required, the vector is non-network-reachable, and exploitation is limited to Windows endpoints. The E:U supplemental metric and absence from CISA KEV both indicate no observed exploitation activity, consistent with a vulnerability requiring physical or remote-desktop access to a managed corporate endpoint. Even a mid-sized municipal IT team in sanok should treat this as a meaningful but non-emergency risk, prioritizing it in environments where insider threat or data exfiltration is a primary concern - such as financial services, healthcare, or government sectors with high-sensitivity regulated data. The VI:H integrity metric in the provided CVSS 4.0 vector appears overstated for a DLP bypass whose demonstrated impact is data exfiltration (confidentiality), not data modification; this discrepancy is noted but does not materially change the overall risk profile. No fix version was available in the referenced data, which limits remediation precision.

Exploit ScenarioDerived

A low-privileged Windows user on a managed corporate endpoint running Prisma Access Agent with DLP configured identifies a mechanism to bypass the local DLP inspection layer, then stages and transfers sensitive files - such as source code, financial records, or PII - to an external destination that configured DLP policy would normally block. The attack requires only an existing local user session and no network-facing component, making it suited to insider threat scenarios rather than opportunistic remote attacks. No public exploit code is identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 10, 2026

DLP policy enforcement bypass in Palo Alto Networks Prisma Access Agent on Windows allows a low-privileged local user to circumvent configured EndPoint Data Loss Prevention controls and exfiltrate sensitive data that configured policy should block. The vulnerability is explicitly scoped to Windows deployments only - macOS, Linux, iOS, Android, and Chrome OS agents are confirmed unaffected by the vendor. No public exploit code is identified at time of analysis, and the CVSS 4.0 exploitation metric (E:U) indicates no observed active exploitation.

RemediationAI

Consult the Palo Alto Networks security advisory at https://security.paloaltonetworks.com/CVE-2026-0306 for patch availability and the specific fixed version of Prisma Access Agent for Windows, which was not present in available data at time of analysis. Patch available per vendor advisory, but exact fix version not independently confirmed from available references. As compensating controls pending patch deployment, organizations should restrict local user privilege levels on Windows endpoints running Prisma Access Agent, enforce DLP controls server-side at network egress points in addition to the endpoint agent, and enable logging and alerting for large or anomalous data transfers. Organizations in regulated industries should consider supplemental endpoint controls such as filesystem-level access restrictions or application-layer data controls to reduce reliance on the agent-only enforcement path.

Affected VersionsENISA

Prisma Access Agent 0 <26.2

Affected Packages

euvd prisma_access_agent fix: 26.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Palo Alto Networks Prisma Access Agent is a SASE endpoint client responsible for enforcing network security and data protection policies, including EndPoint Data Loss Prevention (DLP), on managed devices. DLP enforcement operates by inspecting outbound data transfers and blocking those matching configured policy rules at the endpoint level. The root cause is CWE-693 (Protection Mechanism Failure), meaning the enforcement mechanism itself can be bypassed rather than defeated through a classic memory or logic exploit. The CPE identifier cpe:2.3:a:palo_alto_networks:prisma_access_agent:*:*:*:*:*:*:*:* covers all versions of the agent, but the Windows-only scope is derived from the description's explicit enumeration of unaffected platforms. The Windows agent's DLP enforcement layer appears to lack sufficient tamper resistance against local low-privilege manipulation.

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Severity by source

Vendor (palo_alto) PRIMARY 5.8 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
vuln.today AI 5.5 MEDIUM

Local low-privilege access required on Windows; DLP bypass impacts confidentiality only, with no integrity modification or availability consequence.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (palo_alto).

CVSS VectorVendor: palo_alto

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch available
Sep 10, 2026 - 07:01 EUVD
CVE Published
Sep 10, 2026 - 05:55 cve.org
MEDIUM 5.8

DescriptionCVE.org

A vulnerability in the EndPoint Data Loss Prevention (DLP) enforcement of Palo Alto Networks Prisma® Access Agent enables a local user to bypass configured DLP policy enforcement controls and exfiltrate sensitive data.

This Prisma Access Agent on macOS, Linux, iOS, Android and Chrome OS is not affected.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Prevalence
Medium
enterprise SASE endpoint agent, broadly deployed in corporate environments
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +29
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

CVE-2026-0248 MEDIUM
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Improper certificate validation in Palo Alto Networks Prisma Access Agent versions below 26.2.1 on Android and Chrome OS

CVE-2026-0294 MEDIUM
6.0 Aug 13

Privilege escalation via an uncontrolled search path (CWE-427) in Palo Alto Networks Prisma Access Agent on Windows and

CVE-2026-0271 MEDIUM
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Privilege escalation in Palo Alto Networks Prisma Access Agent on Linux allows a locally authenticated low-privileged us

CVE-2026-0247 MEDIUM
5.9 May 13

Authorization bypass in Palo Alto Networks Prisma Access Agent's Endpoint DLP component permits a locally authenticated

CVE-2026-0246 MEDIUM
5.9 May 13

Local privilege escalation in Palo Alto Networks Prisma Access Agent (all versions prior to 26.2.1) allows any locally a

CVE-2026-0278 MEDIUM
5.8 Jul 09

Multiple protection mechanism failures in the Data Loss Prevention (DLP) component of Palo Alto Networks Prisma Access A

CVE-2026-0277 MEDIUM
5.7 Jul 09

Improper certificate validation in the Palo Alto Networks Prisma Access Agent for iOS exposes VPN tunnel traffic to inte

CVE-2026-0293 MEDIUM
5.6 Aug 13

Anti-tamper protection bypass in Palo Alto Networks Prisma Access Agent on Windows allows a local administrator to gain

CVE-2026-0268 MEDIUM
4.4 Jun 10

Security control bypass in Palo Alto Networks Prisma Access Agent for Linux enables a local, low-privileged attacker to

CVE-2026-0305 MEDIUM
4.3 Sep 10

Information disclosure in the Palo Alto Networks Prisma® Access Agent on Linux allows local low-privileged users to read

CVE-2026-0245 MEDIUM
4.3 May 13

Prisma Access Agent on Windows and macOS exposes sensitive configuration data and credentials to local low-privileged us

CVE-2026-0292 LOW
2.1 Aug 13

Authentication bypass in the Windows network driver of Palo Alto Networks Prisma Access Agent allows a local administrat

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