Which products and versions are affected by CVE-2026-6043?

Affected: Helix Core Server (P4D). The full list is in the CVE brief.

Is CVE-2026-6043 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-6043 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2026-6043?

No public exploit code is known.

Is there a fix for CVE-2026-6043?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2026-6043 be patched?

Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

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Vulnerability Intelligence

CVE-2026-6043

High

Insecure Default Configuration in P4 Server

Published Apr 24, 2026 · Updated Apr 28, 2026

Key Facts

Patch in the next maintenance window

CVE-2026-6043 is a high-severity vulnerability (CVSS 8.8 v4) affecting Helix Core Server (P4D).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 1.3% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

CVSS v4

8.8

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/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:X/R:X/V:X/RE:X/U:X

EPSS (30-day exploit likelihood)

1.3%

Higher than 68.9% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2026-6043 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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

1 affected entries in total

Product	Affected versions	Fixed in
Helix Core Server (P4D)	See advisory	n/a

Timeline

Publicly disclosed
Apr 24, 2026
Last updated
Apr 28, 2026

Weakness Type

CWE-1188 Initialization of a Resource with an Insecure Default

References

FAQ

Common Questions.

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.
Affected: Helix Core Server (P4D). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.

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