CVE-2026-55706
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass...
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
- Record
CVE-2026-55706- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-1284
- Updated
- 2026-11-02
EUVDEUVD-2026-37521
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
- Record
EUVD-2026-37521- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rrgf-j5xj-h9hc
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass...
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
- Record
GHSA-rrgf-j5xj-h9hc- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-1284
- Updated
- 2026-11-02
NVD
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
- Record
CVE-2026-55706- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L - CVSS 3.1
- 8.3 High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-1284
- Updated
- 2026-11-02
OSV
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
- Record
CVE-2026-55706- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-1284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-55706 is a medium vulnerability (CVSS 5.8) in Openbsd, published June 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. No source names a fixed version.
References
blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html
openwall.com/lists/oss-security/2026/06/16/9
github.com/openbsd/src/commit/076e2b1c1fc4ac0883a72d3544131ad5cee7adf8
nvd.nist.gov/vuln/detail/CVE-2026-55706