What is CVE-2021-34863?

CVE-2021-34863 is a high-severity vulnerability in D-link Dap-2020, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-10-25.

How severe is CVE-2021-34863?

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

Is CVE-2021-34863 known to be exploited?

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

Buffer overflow in D-link Dap-2020

CVE-2021-34863

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within th…

Vulnerability class: Buffer Overflow

EPSS: 0.011 (78.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

D-link Dap-2020 — versions 1.01rc001

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

References

supportannouncement.us.dlink.com/announcement/publication.aspx (x_refsource_MISC)
www.zerodayinitiative.com/advisories/ZDI-21-979/ (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-34863?: CVE-2021-34863 is a high-severity vulnerability in D-link Dap-2020, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-10-25.
How severe is CVE-2021-34863?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-34863 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.