CVE-2025-8823Public exploitNetwork attack vector

Authenticated command execution via stored DeviceName injection

Published Aug 11, 2025 · Updated Aug 12, 2025

OS command injection in Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 allows remote authenticated users to execute commands. The setDeviceName handler in mod_form.so stores an unchecked DeviceName value with nvram_bufset, and ExecuteOnlineFW later extracts it into a shell command. A valid web session is required; submitting shell metacharacters in DeviceName and then invoking ExecuteOnlineFW runs commands with the extender application's privileges.

CVSS severity8.8
High
EPSS probability8.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 allows remote authenticated users to execute commands. The setDeviceName handler in mod_form.so stores an unchecked DeviceName value with nvram_bufset, and ExecuteOnlineFW later extracts it into a shell command. A valid web session is required; submitting shell metacharacters in DeviceName and then invoking ExecuteOnlineFW runs commands with the extender application's privileges.

The record

CVE
CVE-2025-8823
Published
Aug 11, 2025
Updated
Aug 12, 2025
Vendor
Linksys
Product
RE6250
Classifications
CWE-77, CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=20250801

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linksys · RE6250version=20250801
Linksys · RE7000version=20250801
Linksys · RE9000version=20250801
Linksys · RE6300version=20250801
Linksys · RE6350version=20250801
Linksys · RE6500version=20250801

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

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

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo