How severe is CVE-2023-47856?

CVE-2023-47856 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-47856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-47856?

CVE-2023-47856 primarily affects Realtek Rtl819x Jungle Software Development Kit. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-47856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-47856 have an EU (EUVD) identifier?

Yes. CVE-2023-47856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-51951.

When was CVE-2023-47856 published?

CVE-2023-47856 was published on 2024-07-08 and last updated on 2026-06-17.

CVE-2023-47856

CVE-2023-47856 is a high-severity vulnerability in Realtek Rtl819x Jungle Software Development Kit with a CVSS 3.x base score of 7.2. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-51951
Weakness: CWE-787
Affected product: Realtek Rtl819x Jungle Software Development Kit
Published: 2024-07-08
Last modified: 2026-06-17

Description

A stack-based buffer overflow vulnerability exists in the boa set_RadvdPrefixParam functionality of Realtek rtl819x Jungle SDK v3.4.11. A specially crafted series of network requests can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.

Frequently asked questions

What is CVE-2023-47856?: A stack-based buffer overflow vulnerability exists in the boa set_RadvdPrefixParam functionality of Realtek rtl819x Jungle SDK v3.4.11. A specially crafted series of network requests can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.
How severe is CVE-2023-47856?: CVE-2023-47856 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-47856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-47856?: CVE-2023-47856 primarily affects Realtek Rtl819x Jungle Software Development Kit. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-47856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-47856 have an EU (EUVD) identifier?: Yes. CVE-2023-47856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-51951.
When was CVE-2023-47856 published?: CVE-2023-47856 was published on 2024-07-08 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:3.4.11:*:*:*:*:*:*:*
cpe:2.3:o:level1:wbr-6013_firmware:rer4_a_v3411b_2t2r_lev_09_170623:*:*:*:*:*:*:*

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