What is CVE-2023-30309?

CVE-2023-30309 is a medium-severity vulnerability in Dlink Di-7003g. CVSS score: 5.7/10. Published 2024-05-28.

How severe is CVE-2023-30309?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Dlink Di-7003g

CVE-2023-30309

An issue discovered in D-Link DI-7003GV2 routers allows attackers to hijack TCP sessions which could lead to a denial of service.

Published 2024-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.9th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Dlink Di-7003g — versions v2
Dlink Di-7003g Firmware

References

www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijack… (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-30309?: CVE-2023-30309 is a medium-severity vulnerability in Dlink Di-7003g. CVSS score: 5.7/10. Published 2024-05-28.
How severe is CVE-2023-30309?: Medium severity. CVSS v3 base score is 5.7 out of 10.