sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Openbsd
  • Openbsd

No data.

No data.

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References
Link Providers
https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html cve-icon
https://github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8 cve-icon
https://www.openwall.com/lists/oss-security/2026/06/16/9 cve-icon
History

Wed, 17 Jun 2026 05:15:00 +0000

Type Values Removed Values Added
Description sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
First Time appeared Openbsd
Openbsd openbsd
Weaknesses CWE-1284
CPEs cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
Vendors & Products Openbsd
Openbsd openbsd
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-17T00:53:23.246Z

Reserved: 2026-06-17T00:53:22.791Z

Link: CVE-2026-55706

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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