How severe is CVE-2023-34563?

CVE-2023-34563 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-34563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34563?

CVE-2023-34563 affects Netgear R6250 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34563?

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

When was CVE-2023-34563 published?

CVE-2023-34563 was published on 2023-06-20 and last updated on 2026-06-17.

CVE-2023-34563

CVE-2023-34563 is a critical-severity vulnerability in Netgear R6250 Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Netgear R6250 Firmware
Published: 2023-06-20
Last modified: 2026-06-17

Description

netgear R6250 Firmware Version 1.0.4.48 is vulnerable to Buffer Overflow after authentication.

Frequently asked questions

What is CVE-2023-34563?: netgear R6250 Firmware Version 1.0.4.48 is vulnerable to Buffer Overflow after authentication.
How severe is CVE-2023-34563?: CVE-2023-34563 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-34563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34563?: CVE-2023-34563 affects Netgear R6250 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-34563 published?: CVE-2023-34563 was published on 2023-06-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:netgear:r6250_firmware:1.0.4.48:*:*:*:*:*:*:*

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