What is CVE-2023-39666?

CVE-2023-39666 is a critical-severity vulnerability in Dlink Dir-842, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-18.

How severe is CVE-2023-39666?

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

Buffer overflow in Dlink Dir-842

CVE-2023-39666

D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 was discovered to contain multiple buffer overflows in the fgets function via the acStack_120 and acStack_220 parameters.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (63.2th percentile) — read the EPSS interpretation.

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.

Affected products

Dlink Dir-842
Dlink Dir-842_firmware — versions 1.05b02
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Vendor Advisory)
cve@mitre.org (Broken Link)

Frequently asked questions

What is CVE-2023-39666?: CVE-2023-39666 is a critical-severity vulnerability in Dlink Dir-842, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-18.
How severe is CVE-2023-39666?: Critical severity. CVSS v3 base score is 9.8 out of 10.