What is CVE-2023-30308?

CVE-2023-30308 is a medium-severity vulnerability in Ruijie Rg-Eg105g, classified under Observable Discrepancy. CVSS score: 6.5/10. Published 2024-05-28.

How severe is CVE-2023-30308?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Ruijie Rg-Eg105g

CVE-2023-30308

An issue discovered in Ruijie EG210G-P, Ruijie EG105G-V2, Ruijie NBR, and Ruijie EG105G 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 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.4% 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

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

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-2023-30308?: CVE-2023-30308 is a medium-severity vulnerability in Ruijie Rg-Eg105g, classified under Observable Discrepancy. CVSS score: 6.5/10. Published 2024-05-28.
How severe is CVE-2023-30308?: Medium severity. CVSS v3 base score is 6.5 out of 10.