CVE-2026-6043
P4 Server versions prior to 2026.1 are configured with insecure default settings that, when exposed to untrusted networks, allow unauthenticated attackers to create arbitrary user accounts, enumerate existing users, authenticate to accounts with no password set, and access depot contents via the built-in 'remote' user. These default settings, taken together, can lead to unauthorized access to source code repositories and other managed assets. The 2026.1 release, expected in May 2026, enforces secure-by-default configurations on upgrade and new installations
- Affected products
- P4 Server
- CVSS 4.0
- 8.8 HIGH
- EPSS
- 1.3% (67th percentile)
- Weakness
- CWE-1188
- NVD status
- Awaiting Analysis
- Published
- 2026-04-24
- Attack patterns
- CAPEC-169
Fix
Upgrade to P4 Server (P4D) version 2026.1 or later, expected in May 2026, which enforces secure-by-default configurations on both new installations and upgrades.
Workaround
For installations that cannot immediately upgrade to 2026.1, administrators should apply manual hardening by configuring security-related server settings as documented at https://help.perforce.com/helix-core/server-apps/p4sag/current/Content/P4SAG/security-configurables.html.
1 known exploit for CVE-2026-6043
Proof-of-concept code and exploit modules indexed by Sploitus