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PatchSiren cyber security CVE debrief

CVE-2026-103510 Perforce CVE debrief

CVE-2026-103510 is a critical vulnerability in P4 Search that allows an unauthenticated attacker to gain the highest application privilege. The vulnerability exists when the service authentication token is blank, and an attacker with network access can potentially compromise P4 Search and the connected P4 Server. Defenders should prioritize updating to version 2026.4.2 or later and restrict network access to mitigate potential risks. This debrief is based on CVE Program and NVD records.

Vendor
Perforce
Product
P4 (Helix Core)
CVSS
CRITICAL 9.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-05
Original CVE updated
2026-10-05
Advisory published
2026-10-05
Advisory updated
2026-10-05

Who should care

Administrators and users of P4 Search, especially those with network access to the service, should assess exposure and take necessary actions to update or restrict access. Additionally, security teams and vulnerability management teams should review the vulnerability's scope and severity to ensure proper mitigation and remediation efforts.

Why it matters

CVE-2026-103510 is a critical vulnerability in P4 Search that allows an unauthenticated attacker to gain the highest application privilege. Defenders should prioritize updating to version 2026.4.2 or later and restrict network access to mitigate potential risks.

  • Potential compromise of P4 Search and connected P4 Server
  • Elevation of privileges for an unauthenticated attacker
  • Possible unauthorized access to sensitive data

Technical summary

P4 Search prior to 2026.4.2 does not fail securely when its service authentication token is blank. In affected configurations, an unauthenticated attacker with network access can obtain the highest application privilege, potentially leading to compromise of P4 Search and the connected P4 Server. The vulnerability highlights the importance of secure authentication mechanisms and the need for defenders to prioritize updates and restrict network access to mitigate potential risks. This technical summary is based on information from CVE Program and NVD records.

Defensive priority

High

Recommended defensive actions

  • Review and update P4 Search to version 2026.4.2 or later
  • Restrict network access to P4 Search
  • Monitor P4 Search and connected P4 Server for suspicious activity
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in P4 Search prior to 2026.4.2. The vulnerability allows an unauthenticated attacker with network access to obtain the highest application privilege, potentially leading to compromise of P4 Search and the connected P4 Server. Evidence is limited to CVE Program and NVD records, and defenders should verify the vulnerability's existence and scope within their environments.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-103510 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-103510

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-103510 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-103510

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://portal.perforce.com/s/cve/a91Qi000003FDw5IAG/authentication-bypass-via-blank-auth-token-in-p4search

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.