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CVE-2026-55706

Published: Jun 17, 2026Updated: Jun 17, 2026 Sources: CVE List NVDCWE-1284
NVD MITRE
5.8CVSSMEDIUM
EPSS Score
0.2%
Top 85.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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

CVSS Vector Breakdown

AV:AAC:HPR:NUI:NS:CC:LI:LA:L
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-1284

Affected Products

OpenBSDOpenBSD
On-premOS
Operating Systems / unix-bsd
openbsdoss-projectCAOperating Systemsaka openbsd

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html
blog.argus-systems.ai
https://www.openwall.com/lists/oss-security/2026/06/16/9
openwall.com
https://github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8
github.com
and 1 more references View all →

Timeline

Published
Jun 17, 2026
Last Updated
Jun 17, 2026
News mentions
1

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