How severe is CVE-2023-30308?

CVE-2023-30308 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-30308 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30308?

CVE-2023-30308 primarily affects Ruijie Rg-eg210g-p Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-30308?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-30308 have an EU (EUVD) identifier?

Yes. CVE-2023-30308 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-34731.

When was CVE-2023-30308 published?

CVE-2023-30308 was published on 2024-05-28 and last updated on 2026-06-17.

CVE-2023-30308

CVE-2023-30308 is a medium-severity vulnerability in Ruijie Rg-eg210g-p Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-34731
Weakness: CWE-203
Affected product: Ruijie Rg-eg210g-p Firmware
Published: 2024-05-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-30308?: CVE-2023-30308 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-30308 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30308?: CVE-2023-30308 primarily affects Ruijie Rg-eg210g-p Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-30308?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-30308 have an EU (EUVD) identifier?: Yes. CVE-2023-30308 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-34731.
When was CVE-2023-30308 published?: CVE-2023-30308 was published on 2024-05-28 and last updated on 2026-06-17.

References

https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/

Affected products (7)

cpe:2.3:o:ruijie:rg-eg210g-p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-eg105g_v2_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-nbr6210-e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-nbr6215-e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-nbr6120-e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-nbr6205-e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:ruijie:rg-eg105g_firmware:-:*:*:*:*:*:*:*

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