Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 83.5%; technical severity is CVSS 9.8.
The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html. This buffer overflow can be exploited by an unauthenticated attacker to achieve remote code execution.
Who should care
- Teams operating D6100 Firmware, D7000 Firmware, D7800 Firmware +26 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether D6100 Firmware, D7000 Firmware, D7800 Firmware +26 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Treatment intelligence
Remediation intelligence
Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.
Verification noteAutomated link verification has not completed for this guidance yet.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-119
- Affected versions
- Netgear D6100 Firmware (Version -); Netgear D7000 Firmware (Version -); Netgear D7800 Firmware (Version -); Netgear Jnr1010v2 Firmware (Version -); Netgear Jnr3300 Firmware (Version -); Netgear Jwnr2010v5 Firmware (Version -); Netgear R2000 Firmware (Version -); Netgear R6100 Firmware (Version -)
- Fixed versions
- No explicit fixed version is currently recorded.
- Published
- 30 January 2017
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 83.5%
- Signal calculated at 83