CVE-2024-54803Public exploitNetwork attack vector

Root command execution via unsanitized PPPoE peer MAC

Published Mar 31, 2025 · Updated Apr 2, 2025

Command injection in NETGEAR WNR854T firmware 1.5.2 for North America allows remote authenticated users to execute commands via post.cgi. The handler stores an unsanitized pppoe_peer_mac value in NVRAM; /bin/sysinit inserts it into an sprintf-built command passed to system() at boot. Exploitation requires authenticated access, wan_proto=pppoe, and a reboot, after which the injected command runs as root and remains stored in NVRAM.

CVSS severity9.8
Critical
EPSS probability1.66%
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 NETGEAR WNR854T firmware 1.5.2 for North America allows remote authenticated users to execute commands via post.cgi. The handler stores an unsanitized pppoe_peer_mac value in NVRAM; /bin/sysinit inserts it into an sprintf-built command passed to system() at boot. Exploitation requires authenticated access, wan_proto=pppoe, and a reboot, after which the injected command runs as root and remains stored in NVRAM.

The record

CVE
CVE-2024-54803
Published
Mar 31, 2025
Updated
Apr 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.004Unix Shell

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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