HOMEVULNERABILITIESCVE-2020-28041
MEDIUM

CVE-2020-28041

CWE-276Published: November 2, 2020· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

The SIP ALG implementation on NETGEAR Nighthawk R7000 1.0.9.64_10.2.64 devices allows remote attackers to communicate with arbitrary TCP and UDP services on a victim's intranet machine, if the victim visits an attacker-controlled web site with a modern browser, aka NAT Slipstreaming. This occurs because the ALG takes action based on an IP packet with an initial REGISTER substring in the TCP data, and the correct intranet IP address in the subsequent Via header, without properly considering that connection progress and fragmentation affect the meaning of the packet data.

NVD Source

Technical Analysis

CVE-2020-28041 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected Vendors & Products

netgear2 product(s)
nighthawk r7000 firmwarenighthawk r7000
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://github.com/samyk/slipstream
ADVISORYhttps://news.ycombinator.com/item?id=24956616
ADVISORYhttps://news.ycombinator.com/item?id=24958281
ADVISORYhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0024
ADVISORYhttps://samy.pl/slipstream/
ADVISORYhttps://github.com/samyk/slipstream
ADVISORYhttps://news.ycombinator.com/item?id=24956616
ADVISORYhttps://news.ycombinator.com/item?id=24958281
ADVISORYhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0024
ADVISORYhttps://samy.pl/slipstream/

All References (10)

→
https://github.com/samyk/slipstreamThird Party Advisory
→
https://news.ycombinator.com/item?id=24956616Exploit · Third Party Advisory
→
https://news.ycombinator.com/item?id=24958281Exploit · Third Party Advisory
→
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0024Third Party Advisory
→
https://samy.pl/slipstream/Exploit · Third Party Advisory
→
https://github.com/samyk/slipstreamThird Party Advisory
→
https://news.ycombinator.com/item?id=24956616Exploit · Third Party Advisory
→
https://news.ycombinator.com/item?id=24958281Exploit · Third Party Advisory
→
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0024Third Party Advisory
→
https://samy.pl/slipstream/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-28041
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-276
CISA KEVNo
Affected1 vendor(s)
PublishedNov 2, 2020

Related CVEs (CWE-276)

CVE-2023-29131
10.0
CVE-2020-29492
10.0
CVE-2022-42150
10.0
CVE-2025-40585
9.9
CVE-2019-19896
9.9
CVE-2017-0847
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-28041 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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