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TI-2019-14064 Aliases CVE-2019-19522GHSA-w448-mv88-mx78

OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is…

Priority LOW 34CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.

Why it matters now

EPSS 0.00468 40th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*6.6VulnerableOpenBSD
  • cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:* Versions 6.6 Vulnerable ·OpenBSD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-19522
  2. 2026-10-03 Alias added: GHSA-w448-mv88-mx78

References

Exploit 3

Advisory 3

  • TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
  • TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
  • TI-2007-05153 Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD… CVSS 2.0HIGH 7.2
  • TI-2001-00539 Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows… CVSS 2.0HIGH 10.0
  • TI-2026-40218 sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication… CVSS 3.1HIGH 8.3
  • TI-2004-00444 Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31… CVSS 2.0HIGH 10.0
See all 200 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences