What is CVE-2023-44807?

CVE-2023-44807 is a critical-severity vulnerability in Dlink Dir-820l, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-06.

How severe is CVE-2023-44807?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-44807 known to be exploited?

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

Buffer overflow in Dlink Dir-820l

CVE-2023-44807

D-Link DIR-820L 1.05B03 has a stack overflow vulnerability in the cancelPing function.

Vulnerability class: Buffer Overflow

Published 2023-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Dlink Dir-820l
Dlink Dir-820l Firmware — versions 1.05b03

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
github.com/Archerber/bug_submit/blob/main/D-Link/DIR-820l/bug2.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-44807?: CVE-2023-44807 is a critical-severity vulnerability in Dlink Dir-820l, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-06.
How severe is CVE-2023-44807?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-44807 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.