CVE-2026-55706

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Summary

CVECVE-2026-55706
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-17 13:20:52 UTC
Updated2026-06-17 16:24:15 UTC
Descriptionsppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Problem Types: CWE-1284 | CWE-1284 CWE-1284 Improper Validation of Specified Quantity in Input

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
3.1CNACVSS5.8MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenBSD OpenBSD affected 076e2b1c1fc4ac0883a72d3544131ad5cee7adf8 git Not specified

References

ReferenceSourceLinkTags
blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html [email protected] blog.argus-systems.ai
blog.argus-systems.ai/blog/poc-001-pap-bypass.py 134c704f-9b21-4f2e-91b3-4a467353bcc0 blog.argus-systems.ai
www.openwall.com/lists/oss-security/2026/06/16/9 [email protected] www.openwall.com
github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8 [email protected] github.com
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