What is CVE-2021-27239?

CVE-2021-27239 is a high-severity vulnerability in Netgear D6220, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-03-29.

How severe is CVE-2021-27239?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-27239 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Netgear D6220

CVE-2021-27239

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specif…

Vulnerability class: Buffer Overflow

EPSS: 0.007 (50.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

References

zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27239?: CVE-2021-27239 is a high-severity vulnerability in Netgear D6220, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-03-29.
How severe is CVE-2021-27239?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-27239 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.