Is CVE-2020-36109 in the CISA KEV catalog?

No. CVE-2020-36109 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-36109?

CVE-2020-36109 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-36109?

CVE-2020-36109 has an EPSS score of 4.21% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-36109?

Upgrade rt-ax86u firmware to 9.0.0.4_386 or later.

CVE & CISA-KEV Catalog

CVE-2020-36109

CRITICALEPSS 90th pctl

9.8

CVSS v3

NVD

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.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

rt-ax86u firmwareNVD

Affected:< 9.0.0.4_386Fixed in:9.0.0.4_386CVE-2020-36109derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.21%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

asus.com

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.