NETGEAR WNR2000v5 Router Buffer Overflow Vulnerability
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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)25 Mar 2022
- Exploited in EUVD (ENISA)25 Mar 2022
- Used by ransomwareno
- EPSS above 10 %83.3%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
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.
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 83.3%
References
Other exploited vulnerabilities from the same vendor
- CVE-2017-5521NETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability8.3 · Background exploitation
- CVE-2017-6862NETGEAR Multiple Devices Buffer Overflow Vulnerability7.7 · Background exploitation
- CVE-2017-6334NETGEAR DGN2200 Devices OS Command Injection Vulnerability7.5 · Background exploitation
- CVE-2016-1555NETGEAR Multiple WAP Devices Command Injection Vulnerability9.3 · Background exploitation
- CVE-2017-6077NETGEAR DGN2200 Remote Code Execution Vulnerability8.4 · Background exploitation
- CVE-2016-6277NETGEAR Multiple Routers Remote Code Execution Vulnerability8.9 · Background exploitation