Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:L) | Local access needed |
| Attack complexity (AC:L) | Low complexity |
| Attack requirements (AT:P) | Attack requirements present |
| Privileges required (PR:L) | Low privileges required |
| User interaction (UI:N) | No user interaction |
| Confidentiality (VC:H) | High confidentiality impact |
| Integrity (VI:H) | High integrity impact |
| Availability (VA:H) | High availability impact |
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:Amber
About Paloaltonetworks Prisma Browser
CVE-2026-0237 affects Paloaltonetworks Prisma Browser, a product from Paloaltonetworks. Before acting, confirm where Paloaltonetworks Prisma Browser runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: An improper protection of alternate path vulnerability in Palo Alto Networks Prisma® Browser on macOS fails to properly restrict access to an internal automation bridge. This allows a locally authenticated non-admin user to leverage an exposed communication channel to send unauthorized commands to the browser, bypassing security controls.
Based on its CVSS vector, the flaw needs local or adjacent access, needs some level of access, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Paloaltonetworks Prisma Browser |
| Affected versions | Prisma Browser before 146.16.6.165 |
| Published | May 13, 2026 |
| Last modified | Jul 14, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | psirt@paloaltonetworks.com |
How to detect it
- Inventory every instance of Paloaltonetworks Prisma Browser and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Paloaltonetworks Prisma Browser named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Paloaltonetworks Prisma Browser to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
Technical References
Frequently asked questions
Related CVEs
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.
Idira Privileged Access Manager (PAM) Self-Hosted Vault versions prior to 15.0.3, 14.6.5, 14.2.7, and 14.0.8 exhibit a validation vulnerability. Under specific circumstances and configuration scenarios, processing unexpected input could potentially lead to an unexpected service termination, resulting in a localized denial of service (DoS). CyberArk Security Bulletin: CA26-17
Idira Vendor PAM - Self-Hosted Connector versions prior 1.1.100504 under specific conditions and configuration scenarios, TLS certificate validation may not be fully enforced. CyberArk Security Bulletin: CA26-17
Idira Endpoint Privilege Manager Linux Agent versions prior to 26.5 allow a local attacker to potentially compromise the agent daemon initialization. CyberArk Security Bulletin: CA26-19
Due to incomplete input validation in Idira Privileged Session Manager for SSH (PSMP) versions prior to 15.0.2, 14.6.3, 14.2.5, and 14.0.6, an authenticated, low-privileged user could potentially execute arbitrary commands on the PSMP host. CyberArk Security Bulletins: CA26-17 and CA26-18
Incomplete input validation and improperly configured folder permissions within Idira Privileged Session Manager (PSM) versions prior to 15.0.3, 14.6.3, 14.2.5, and 14.0.5, an authenticated, low-privileged user could potentially execute arbitrary code. CyberArk Security Bulletin: CA26-17 and CA26-18
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