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CVE-2026-55706

CVE-2026-55706

CVSS 5.8 MEDIUMEPSS 0.2%CWE-1284
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Affected products
OpenBSD · OpenBSD
public PoCs found — 1
cve_referenceblog.argus-systems.ai/blog/poc-001-pap-bypass.pyunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.htmlhttps://blog.argus-systems.ai/blog/poc-001-pap-bypass.pyhttps://github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8https://www.openwall.com/lists/oss-security/2026/06/16/9