How severe is CVE-2020-26652?

CVE-2020-26652 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-26652 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26652?

CVE-2020-26652 affects Realtek Rtl8812au Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26652?

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.

When was CVE-2020-26652 published?

CVE-2020-26652 was published on 2023-08-22 and last updated on 2026-06-17.

CVE-2020-26652

CVE-2020-26652 is a high-severity vulnerability in Realtek Rtl8812au Firmware with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Realtek Rtl8812au Firmware
Published: 2023-08-22
Last modified: 2026-06-17

Description

An issue was discovered in function nl80211_send_chandef in rtl8812au v5.6.4.2 allows attackers to cause a denial of service.

Frequently asked questions

What is CVE-2020-26652?: An issue was discovered in function nl80211_send_chandef in rtl8812au v5.6.4.2 allows attackers to cause a denial of service.
How severe is CVE-2020-26652?: CVE-2020-26652 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-26652 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26652?: CVE-2020-26652 affects Realtek Rtl8812au Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26652?: 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.
When was CVE-2020-26652 published?: CVE-2020-26652 was published on 2023-08-22 and last updated on 2026-06-17.

References

https://github.com/aircrack-ng/rtl8812au/issues/730

Affected products (1)

cpe:2.3:o:realtek:rtl8812au_firmware:5.6.4.2:*:*:*:*:*:*:*

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