EUVD-2026-66248
GHSA-8qxx-j2rw-6vhr
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only exploitation via ppp(8) interface access (PR:L, AV:L); no complexity, interaction, or scope change; full CIA impact because ppp(8) runs as root.
Primary rating from Vendor (freebsd).
CVSS VectorVendor: freebsd
Lifecycle Timeline
4DescriptionCVE.org
mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflow via the ppp(8) command interface.
A local user with access to the ppp(8) command interface can crash ppp(8) or potentially execute arbitrary code as root.
AnalysisAI
Buffer overflow in FreeBSD's ppp(8) PPP daemon enables a local user with access to the ppp(8) command interface to crash the process or execute arbitrary code as root by supplying an oversized PSN endpoint value to the mp_SetEnddisc() function, which copies the input without length validation. FreeBSD 15.1-RELEASE (before p3), 15.0-RELEASE (before p13), and 14.4-RELEASE (before p9) are all confirmed affected per EUVD-2026-66248 and FreeBSD Security Advisory SA-26:60. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the attacker hold a local account on the FreeBSD system AND have been specifically granted access to the ppp(8) command interface - access that is controlled via ppp.conf allow directives and typically restricted to network administrators. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) correctly characterizes the local, low-complexity, low-privilege nature of the flaw with full CIA impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the patches documented in FreeBSD Security Advisory SA-26:60 (https://security.freebsd.org/advisories/FreeBSD-SA-26:60.ppp.asc), targeting FreeBSD 15.1-RELEASE-p3, FreeBSD 14.4-RELEASE-p9, or FreeBSD 15.0-RELEASE-p13 as appropriate for the installed branch. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running the affected FreeBSD versions (14.4-RELEASE p9 or earlier, 15.0-RELEASE p13 or earlier, 15.1-RELEASE p3 or earlier) and identify which have local users who access the ppp(8) command interface. …
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External POC / Exploit Code
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