HOMEVULNERABILITIESCVE-2021-25328
HIGH

CVE-2021-25328

CWE-120Published: April 9, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Skyworth Digital Technology RN510 V.3.1.0.4 RN510 V.3.1.0.4 contains a buffer overflow vulnerability in /cgi-bin/app-staticIP.asp. An authenticated attacker can send a specially crafted request to endpoint which can lead to a denial of service (DoS) or possible code execution on the device.

NVD Source

Technical Analysis

CVE-2021-25328 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

skyworthdigital2 product(s)
rn510 firmwarern510
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

ADVISORYhttp://packetstormsecurity.com/files/162450/Shenzhen-Skyworth-RN510-Buffer-Overflow.html
ADVISORYhttp://seclists.org/fulldisclosure/2021/May/5
ADVISORYhttps://s3curityb3ast.github.io/KSA-Dev-011.md
ADVISORYhttp://packetstormsecurity.com/files/162450/Shenzhen-Skyworth-RN510-Buffer-Overflow.html
ADVISORYhttp://seclists.org/fulldisclosure/2021/May/5
ADVISORYhttps://s3curityb3ast.github.io/KSA-Dev-011.md

All References (6)

→
http://packetstormsecurity.com/files/162450/Shenzhen-Skyworth-RN510-Buffer-Overflow.htmlExploit · Third Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2021/May/5Exploit · Mailing List · Third Party Advisory
→
https://s3curityb3ast.github.io/KSA-Dev-011.mdExploit · Third Party Advisory
→
http://packetstormsecurity.com/files/162450/Shenzhen-Skyworth-RN510-Buffer-Overflow.htmlExploit · Third Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2021/May/5Exploit · Mailing List · Third Party Advisory
→
https://s3curityb3ast.github.io/KSA-Dev-011.mdExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-25328
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedApr 9, 2021

Related CVEs (CWE-120)

CVE-2012-10035
10.0
CVE-1999-0046
10.0
CVE-2022-31481
10.0
CVE-2010-10016
10.0
CVE-2002-1337
10.0
CVE-2001-0554
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-25328 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. CVE data is provided under the NVD usage policy.
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