CVE-2017-6077
NETGEAR DGN2200 Remote Code Execution Vulnerability
Description
CVE-2017-6077 is a critical-severity improper neutralization of special elements used in an os command ('os command injection') vulnerability affecting NETGEAR Wireless Router DGN2200. NETGEAR DGN2200 wireless routers contain a vulnerability that allows for remote code execution. CISA has added this vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. With an EPSS score of 86.11% (99.4th percentile), this vulnerability has a notable probability of exploitation.
KEV Information
CVSS Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HOpen in CalculatorAffected Products
| Vendor | Product | Version |
|---|---|---|
| netgear | dgn2200 firmware | <= 10.0.0.50 |
Multiple CVSS Assessments
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- http://www.securityfocus.com/bid/96408(Broken Link, Third Party Advisory, VDB Entry)
- https://www.exploit-db.com/exploits/41394/(Exploit, Third Party Advisory, VDB Entry)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6077(US Government Resource)
Weakness Type
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
OS Command Injection is a vulnerability that occurs when software constructs all or part of an operating system command using externally-influenced input from an upstream component, but does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command. Unlike general command injection (CWE-77), OS command injection specifically targets system shells like bash, cmd.exe, or PowerShell.
Learn more: CWE-78 — Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Impact Analysis
CVE-2017-6077 carries a CVSS 3.1 score of 9.8 (CRITICAL), indicating a maximum-severity threat. The vulnerability is exploitable over the network with low attack complexity and requires no authentication. Successful exploitation can severely compromise data confidentiality, and allow unauthorized modification of data and systems, and cause complete service disruption. Organizations running affected Wireless Router DGN2200 deployments face significant operational risk if this vulnerability remains unpatched.
Exploit Maturity
CVE-2017-6077 is confirmed as actively exploited through its listing in the CISA Known Exploited Vulnerabilities catalog. The EPSS score of 86.11% (99.4th percentile) reflects an exceptionally high probability of exploitation. Public exploit code is available, which lowers the barrier for attackers and increases the urgency of remediation. Federal agencies were required to remediate this vulnerability by 2022-09-07 per CISA's binding operational directive.
Remediation
- Apply vendor patches immediately as mandated by CISA KEV: Apply updates per vendor instructions.
- Verify that all instances of affected products (netgear dgn2200 firmware <= 10.0.0.50) have been updated to patched versions.
- If immediate patching is not possible, restrict network access to affected systems using firewall rules and network segmentation to limit exposure.
- Monitor systems for indicators of compromise, including unusual process activity, unexpected network connections, and unauthorized configuration changes.
- Review security logs and conduct threat hunting to determine if the vulnerability was exploited prior to patching.
Technical Details
CVE-2017-6077 affects NETGEAR Wireless Router DGN2200. NETGEAR DGN2200 wireless routers contain a vulnerability that allows for remote code execution. The attack vector is network-based, meaning an attacker can exploit this vulnerability remotely without physical access to the target system. The maximum CVSS score of 9.8 reflects the combination of easy exploitability and severe impact across confidentiality, integrity, and availability.
Frequently Asked Questions
Is CVE-2017-6077 being actively exploited?
Yes. CVE-2017-6077 is listed in the CISA Known Exploited Vulnerabilities catalog, confirming active exploitation. The EPSS score of 86.11% (99.4th percentile) further indicates a very high exploitation probability.
What products are affected by CVE-2017-6077?
CVE-2017-6077 affects NETGEAR Wireless Router DGN2200. Specifically affected products include: netgear dgn2200 firmware (<= 10.0.0.50).
How do I fix CVE-2017-6077?
Apply updates per vendor instructions. Ensure all affected systems are updated to the latest patched versions. If patching is not immediately possible, implement network-level mitigations to limit exposure.
How severe is CVE-2017-6077?
CVE-2017-6077 has a CVSS 3.1 score of 9.8 (CRITICAL). This is a critical-severity vulnerability that requires immediate attention and remediation.
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