CVE-2021-43573: realtek rtl8195am_firmware Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 11-11-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-43573 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in realtek rtl8195am_firmware. EPSS estimates a 1.10% chance of exploitation in the next 30 days, higher than 65.2% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.10%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-11-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.10%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.10% on 20-09-2026
20-09-202620-10-2026
EPSS score1.10%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Realtek1 product
- rtl8195am_firmware≤ 2.0.10
1 vendor · 1 product