HOMEVULNERABILITIESCVE-2020-15634
MEDIUM

CVE-2020-15634

CWE-134Published: August 20, 2020· Updated: Jun 17, 2026

6.3
CVSS v3.1

Official Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of string table file uploads. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this vulnerability to execute code in the context of the web server. Was ZDI-CAN-9755.

NVD Source

Technical Analysis

CVE-2020-15634 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Vendors & Products

netgear2 product(s)
r6700 firmwarer6700
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://kb.netgear.com/000062126/Security-Advisory-for-Pre-Authentication-Command-Injection-on-R6700v3-PSV-2020-0189
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-935/
ADVISORYhttps://kb.netgear.com/000062126/Security-Advisory-for-Pre-Authentication-Command-Injection-on-R6700v3-PSV-2020-0189
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-935/

All References (4)

→
https://kb.netgear.com/000062126/Security-Advisory-for-Pre-Authentication-Command-Injection-on-R6700v3-PSV-2020-0189Vendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-20-935/Third Party Advisory · VDB Entry
→
https://kb.netgear.com/000062126/Security-Advisory-for-Pre-Authentication-Command-Injection-on-R6700v3-PSV-2020-0189Vendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-20-935/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2020-15634
CVSS Score6.3 / 10
SeverityMEDIUM
WeaknessCWE-134
CISA KEVNo
Affected1 vendor(s)
PublishedAug 20, 2020

Related CVEs (CWE-134)

CVE-2010-1550
10.0
CVE-2012-0242
10.0
CVE-2008-5982
10.0
CVE-2010-2451
10.0
CVE-2007-5561
10.0
CVE-2008-0764
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-15634 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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