CVE-2025-14558Public exploit

Same-segment code execution via unquoted DNSSL input

Published Mar 9, 2026 · Updated Mar 9, 2026

Command injection in FreeBSD 13.5 before p8, 14.3 before p7, and 15.0 before p1 allows attackers to run shell commands via router advertisements. The rtsol and rtsold programs pass an unvalidated DNSSL option body to the resolvconf shell script, where missing quoting permits command substitution. Reachability requires either program to be running and the attacker to share the target's network segment because router advertisements are not routable; successful exploitation executes commands with the service's privileges.

CVSS severity7.2
High
EPSS probability6.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in FreeBSD 13.5 before p8, 14.3 before p7, and 15.0 before p1 allows attackers to run shell commands via router advertisements. The rtsol and rtsold programs pass an unvalidated DNSSL option body to the resolvconf shell script, where missing quoting permits command substitution. Reachability requires either program to be running and the attacker to share the target's network segment because router advertisements are not routable; successful exploitation executes commands with the service's privileges.

The record

CVE
CVE-2025-14558
Published
Mar 9, 2026
Updated
Mar 9, 2026
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-20, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 9, 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=13.5-RELEASE <p8
  2. Affected versionversion=14.3-RELEASE <p7
  3. Affected versionversion=15.0-RELEASE <p1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=13.5-RELEASE <p8; version=14.3-RELEASE <p7; version=15.0-RELEASE <p1

Published CVSS scores

7.2CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1059Command and Scripting Interpreter

Public exploit references

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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