CVE-2021-43573
CVE-2021-43573 is a critical-severity vulnerability in Realtek Rtl8195am Firmware with a CVSS 3.x base score of 9.8. 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-120.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Realtek Rtl8195am Firmware
- Published:
- Last modified:
Description
A buffer overflow was discovered on Realtek RTL8195AM devices before 2.0.10. It exists in the client code when processing a malformed IE length of HT capability information in the Beacon and Association response frame.
Frequently asked questions
- What is CVE-2021-43573?
- A buffer overflow was discovered on Realtek RTL8195AM devices before 2.0.10. It exists in the client code when processing a malformed IE length of HT capability information in the Beacon and Association response frame.
- How severe is CVE-2021-43573?
- CVE-2021-43573 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-2021-43573 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-43573?
- CVE-2021-43573 affects Realtek Rtl8195am Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-43573?
- 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-2021-43573 published?
- CVE-2021-43573 was published on 2021-11-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:realtek:rtl8195am_firmware:*:*:*:*:*:*:*:*
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