CVE-2026-58097

Root code execution via unchecked PSN endpoint copy

Published Aug 26, 2026 · Updated Aug 27, 2026

Heap-based buffer overflow in FreeBSD ppp(8) allows local users to crash the process or execute arbitrary code as root. The mp_SetEnddisc() function copies a user-supplied PSN endpoint value into a heap buffer without validating its length. Execution requires access to the ppp(8) command interface, which is limited to members of the network group; systems that do not use ppp(8) are unaffected.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in FreeBSD ppp(8) allows local users to crash the process or execute arbitrary code as root. The mp_SetEnddisc() function copies a user-supplied PSN endpoint value into a heap buffer without validating its length. Execution requires access to the ppp(8) command interface, which is limited to members of the network group; systems that do not use ppp(8) are unaffected.

The record

CVE
CVE-2026-58097
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-130, CWE-122, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=14.4-RELEASE <p9
  2. Affected versionversion=15.0-RELEASE <p13
  3. Affected versionversion=15.1-RELEASE <p3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=14.4-RELEASE <p9; version=15.0-RELEASE <p13; version=15.1-RELEASE <p3

Published CVSS scores

7.2TenableAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-130Improper Handling of Length Parameter Inconsistency
CWE-122Heap-based Buffer Overflow
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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