Vulnerability DatabaseCVE-2026-55706
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CVE-2026-55706
Published:June 17, 2026
Updated:June 29, 2026
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
Related Resources (4)
https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html
https://www.openwall.com/lists/oss-security/2026/06/16/9
https://github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8
https://blog.argus-systems.ai/blog/poc-001-pap-bypass.py
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CVSS v4
Base Score:
2.3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
LOW
CVSS v3
Base Score:
5.8
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improper Validation of Specified Quantity in Input
CWE-1284
EPSS
Base Score:
0.21