CVE-2025-4116Network attack vector

Memory corruption via unchecked host string copy

Published Apr 30, 2025 · Updated Apr 30, 2025

Buffer overflow in get_cur_lang_ver in NETGEAR JWNR2000v2 1.0.0.11 allows remote authenticated users to corrupt memory via crafted host input. The get_cur_lang_ver function obtains the attacker-controlled host value with nvram_get and copies it with strcpy without checking its length against the destination buffer. A network-authenticated request is required; the published record establishes memory corruption but does not specify whether it causes a crash or code execution.

CVSS severity9.8
Critical
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in get_cur_lang_ver in NETGEAR JWNR2000v2 1.0.0.11 allows remote authenticated users to corrupt memory via crafted host input. The get_cur_lang_ver function obtains the attacker-controlled host value with nvram_get and copies it with strcpy without checking its length against the destination buffer. A network-authenticated request is required; the published record establishes memory corruption but does not specify whether it causes a crash or code execution.

The record

CVE
CVE-2025-4116
Published
Apr 30, 2025
Updated
Apr 30, 2025
Vendor
NETGEAR
Product
JWNR2000v2
Classifications
CWE-120, CWE-119, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.0.0.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NETGEAR · JWNR2000v2version=1.0.0.11

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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