CVE-2026-55706

MEDIUM EPSS 11.4%
Published Jun 17, 20262w ago · Modified Jun 17, 20262w ago
5.8 CVSS 3.1
Medium
Find Similar
Published Jun 17, 2026 2w ago
Last Modified Jun 17, 2026 2w ago

Description

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

CVSS Details

Base Score
5.8
Exploitability
1.6
Impact
3.7
Vector string
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack Vector Adjacent
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
11.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1284

References 4

  • blog.argus-systems.ai https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html
  • blog.argus-systems.ai https://blog.argus-systems.ai/blog/poc-001-pap-bypass.py
  • github.com https://github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8
  • openwall.com https://www.openwall.com/lists/oss-security/2026/06/16/9

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.