How severe is CVE-2020-28041?

CVE-2020-28041 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-28041 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28041?

CVE-2020-28041 affects Netgear Nighthawk R7000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28041?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-28041 published?

CVE-2020-28041 was published on 2020-11-02 and last updated on 2026-06-17.

CVE-2020-28041

CVE-2020-28041 is a medium-severity vulnerability in Netgear Nighthawk R7000 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Netgear Nighthawk R7000 Firmware
Published: 2020-11-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-28041?: 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.
How severe is CVE-2020-28041?: CVE-2020-28041 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-28041 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28041?: CVE-2020-28041 affects Netgear Nighthawk R7000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28041?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-28041 published?: CVE-2020-28041 was published on 2020-11-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:netgear:nighthawk_r7000_firmware:1.0.9.64_10.2.64:*:*:*:*:*:*:*

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