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CVE-2016-10174· NVD / CVE Program· CNA mitre

The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html.

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.

CriticalCVSS 9.8 · v3.1KEVWeaponized No fix recorded
Published
Jan 30, 2017
Updated
Jun 16, 2026
EPSS
83.3% · 100th percentile
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Action score

94

Now

Patch today or shut off access.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
25 / 30 · 83.3%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Mar 25, 2022. That signals real attacks, not theory.

Remediation deadline for government agencies: Apr 15, 2022.

Affected systems

VendorProduct
netgeard6100 firmware
netgeard6100
netgeard7000 firmware
netgeard7000
netgeard7800 firmware
netgeard7800
netgearjnr1010v2 firmware
netgearjnr1010v2
netgearjnr3300 firmware
netgearjnr3300
netgearjwnr2010v5 firmware
netgearjwnr2010v5

and 44 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netgear d6100 firmwareall versions
  • netgear d7000 firmwareall versions
  • netgear d7800 firmwareall versions
  • netgear jnr1010v2 firmwareall versions
  • netgear jnr3300 firmwareall versions
  • netgear jwnr2010v5 firmwareall versions
  • netgear r2000 firmwareall versions
  • netgear r6100 firmwareall versions
  • netgear r6220 firmwareall versions
  • netgear r7500 firmwareall versions
  • netgear r7500v2 firmwareall versions
  • netgear wndr3700v4 firmwareall versions
  • netgear wndr3800 firmwareall versions
  • netgear wndr4300 firmwareall versions
  • netgear wndr4300v2 firmwareall versions
  • netgear wndr4500v3 firmwareall versions
  • netgear wndr4700 firmwareall versions
  • netgear wnr1000v2 firmwareall versions
  • netgear wnr1000v4 firmwareall versions
  • netgear wnr2000v3 firmwareall versions

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-18764Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    36Monitor
  • CVE-2018-21208Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    35Monitor
  • CVE-2018-21113Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    35Monitor
  • CVE-2017-18776Certain NETGEAR devices are affected by authentication bypass.
    33Monitor
  • CVE-2017-18792NETGEAR D6100 devices before 1.0.0.50_0.0.50 are affected by command injection.
    33Monitor
  • CVE-2018-21177Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2016-12-21
Exploit-DB entryremote2017-03-24
Metasploit moduleexploit/linux/http/netgear_wnr2000_rceNETGEAR WNR2000v5 (Un)authenticated hidden_lang_avi Stack Buffer Overflowexploit2016-12-20

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-41 d
  2. First PoC-40 d
  3. Published
  4. CISA KEV+1880 d
  5. TodaySep 30, 2026+3530 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records