Memory corruption via unchecked GET request concatenation
Published Jun 10, 2025 · Updated Jun 10, 2025
Stack-based buffer overflow in /mtd on NETGEAR EX3700 1.0.0.88 and earlier allows remote authenticated users to corrupt memory via HTTP. The sub_41619C function appends attacker-controlled bytes from a GET /mtd request into an effective 100-byte stack buffer with strcat and no bounds check. Access requires low privileges over the extender network; exploitation overwrites adjacent stack memory, while code execution is not publicly established.
Summary
What happened
Stack-based buffer overflow in /mtd on NETGEAR EX3700 1.0.0.88 and earlier allows remote authenticated users to corrupt memory via HTTP. The sub_41619C function appends attacker-controlled bytes from a GET /mtd request into an effective 100-byte stack buffer with strcat and no bounds check. Access requires low privileges over the extender network; exploitation overwrites adjacent stack memory, while code execution is not publicly established.
The record
- CVE
- CVE-2025-5934
- Published
- Jun 10, 2025
- Updated
- Jun 10, 2025
- Vendor
- NETGEAR
- Product
- EX3700
- Classifications
- CWE-121, CWE-119, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 10, 2025CVE publishedPublication date reported by the CVE source.
- Jun 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.0
- Affected versionversion=1.0.0.1
- Affected versionversion=1.0.0.10
- Affected versionversion=1.0.0.11
- Affected versionversion=1.0.0.12
- Affected versionversion=1.0.0.13
- Affected versionversion=1.0.0.14
- Affected versionversion=1.0.0.15
- Affected versionversion=1.0.0.16
- Affected versionversion=1.0.0.17
- Affected versionversion=1.0.0.18
- Affected versionversion=1.0.0.19
- Affected versionversion=1.0.0.2
- Affected versionversion=1.0.0.20
- Affected versionversion=1.0.0.21
- Affected versionversion=1.0.0.22
- Affected versionversion=1.0.0.23
- Affected versionversion=1.0.0.24
- Affected versionversion=1.0.0.25
- Affected versionversion=1.0.0.26
- Affected versionversion=1.0.0.27
- Affected versionversion=1.0.0.28
- Affected versionversion=1.0.0.29
- Affected versionversion=1.0.0.3
- Affected versionversion=1.0.0.30
- Affected versionversion=1.0.0.31
- Affected versionversion=1.0.0.32
- Affected versionversion=1.0.0.33
- Affected versionversion=1.0.0.34
- Affected versionversion=1.0.0.35
- Affected versionversion=1.0.0.36
- Affected versionversion=1.0.0.37
- Affected versionversion=1.0.0.38
- Affected versionversion=1.0.0.39
- Affected versionversion=1.0.0.4
- Affected versionversion=1.0.0.40
- Affected versionversion=1.0.0.41
- Affected versionversion=1.0.0.42
- Affected versionversion=1.0.0.43
- Affected versionversion=1.0.0.44
- Affected versionversion=1.0.0.45
- Affected versionversion=1.0.0.46
- Affected versionversion=1.0.0.47
- Affected versionversion=1.0.0.48
- Affected versionversion=1.0.0.49
- Affected versionversion=1.0.0.5
- Affected versionversion=1.0.0.50
- Affected versionversion=1.0.0.51
- Affected versionversion=1.0.0.52
- Affected versionversion=1.0.0.53
- Affected versionversion=1.0.0.54
- Affected versionversion=1.0.0.55
- Affected versionversion=1.0.0.56
- Affected versionversion=1.0.0.57
- Affected versionversion=1.0.0.58
- Affected versionversion=1.0.0.59
- Affected versionversion=1.0.0.6
- Affected versionversion=1.0.0.60
- Affected versionversion=1.0.0.61
- Affected versionversion=1.0.0.62
- Affected versionversion=1.0.0.63
- Affected versionversion=1.0.0.64
- Affected versionversion=1.0.0.65
- Affected versionversion=1.0.0.66
- Affected versionversion=1.0.0.67
- Affected versionversion=1.0.0.68
- Affected versionversion=1.0.0.69
- Affected versionversion=1.0.0.7
- Affected versionversion=1.0.0.70
- Affected versionversion=1.0.0.71
- Affected versionversion=1.0.0.72
- Affected versionversion=1.0.0.73
- Affected versionversion=1.0.0.74
- Affected versionversion=1.0.0.75
- Affected versionversion=1.0.0.76
- Affected versionversion=1.0.0.77
- Affected versionversion=1.0.0.78
- Affected versionversion=1.0.0.79
- Affected versionversion=1.0.0.8
- Affected versionversion=1.0.0.80
- Affected versionversion=1.0.0.81
- Affected versionversion=1.0.0.82
- Affected versionversion=1.0.0.83
- Affected versionversion=1.0.0.84
- Affected versionversion=1.0.0.85
- Affected versionversion=1.0.0.86
- Affected versionversion=1.0.0.87
- Affected versionversion=1.0.0.88
- Affected versionversion=1.0.0.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- EX3700 GET /mtd proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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