What is CVE-2023-30305?

CVE-2023-30305 is a high-severity vulnerability in Linksys E5600. CVSS score: 7.5/10. Published 2024-05-28.

How severe is CVE-2023-30305?

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

Vulnerability in Linksys E5600

CVE-2023-30305

An issue discovered in Linksys E5600 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 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: 0.004 (33.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

References

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

Frequently asked questions

What is CVE-2023-30305?: CVE-2023-30305 is a high-severity vulnerability in Linksys E5600. CVSS score: 7.5/10. Published 2024-05-28.
How severe is CVE-2023-30305?: High severity. CVSS v3 base score is 7.5 out of 10.