CVE-2020-36109: asus rt-ax86u_firmware Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 01-02-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-36109 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in asus rt-ax86u_firmware. EPSS estimates a 4.21% chance of exploitation in the next 30 days, higher than 90.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
4.21%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 01-02-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
ASUS RT-AX86U router firmware below version under 9.0.0.4_386 has a buffer overflow in the blocking_request.cgi function of the httpd module that can cause code execution when an attacker constructs malicious data.
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
4.21%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.21% on 19-09-2026
19-09-202619-10-2026
EPSS score4.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Asus1 product
- rt-ax86u_firmware< 9.0.0.4_386
1 vendor · 1 product