What is CVE-2022-34973?

CVE-2022-34973 is a high-severity vulnerability in Dlink Dir-820l, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-08-03.

How severe is CVE-2022-34973?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-34973 known to be exploited?

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

Buffer overflow in Dlink Dir-820l

CVE-2022-34973

D-Link DIR820LA1_FW106B02 was discovered to contain a buffer overflow via the nextPage parameter at ping.ccp.

Vulnerability class: Buffer Overflow

Published 2022-08-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.151 (96.6th percentile), scored 2026-10-01.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.151 · newest: 0.151 · change: 0.000

Affected products

Dlink Dir-820l — versions a1
Dlink Dir-820l Firmware — versions 1.06b02

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
github.com/1759134370/iot/blob/main/DIR-820L.md (Exploit, Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2022-34973?: CVE-2022-34973 is a high-severity vulnerability in Dlink Dir-820l, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-08-03.
How severe is CVE-2022-34973?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-34973 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.