How severe is CVE-2026-100103?

CVE-2026-100103 has a CVSS 4.0 base score of 10.0, rated critical severity.

Is CVE-2026-100103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-100103?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-100103 published?

CVE-2026-100103 was published on 2026-10-05 and last updated on 2026-10-06.

CVE-2026-100103

CVE-2026-100103 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1392.

Key facts

Severity: Critical (CVSS 4.0 base score 10.0)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1392
Published: 2026-10-05
Last modified: 2026-10-06

Description

Perforce P4 Search container images prior to 2026.4.2 reset the service authentication token to a publicly documented default value. An unauthenticated attacker with network access can obtain the highest application privilege, potentially leading to arbitrary code execution and compromise of the connected P4 Server.

Frequently asked questions

What is CVE-2026-100103?: Perforce P4 Search container images prior to 2026.4.2 reset the service authentication token to a publicly documented default value. An unauthenticated attacker with network access can obtain the highest application privilege, potentially leading to arbitrary code execution and compromise of the connected P4 Server.
How severe is CVE-2026-100103?: CVE-2026-100103 has a CVSS 4.0 base score of 10.0, rated critical severity.
Is CVE-2026-100103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-100103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-100103 published?: CVE-2026-100103 was published on 2026-10-05 and last updated on 2026-10-06.

References

https://portal.perforce.com/s/cve/a91Qi000003FE8zIAG/authentication-bypass-via-default-auth-token-in-p4search

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