CVE-2026-11736: netgear rax20_firmware Improper Input Validation
CVSS: 4.9v3.1MediumAnalyzed
Published 11-08-2026Last modified 12-08-2026
Vulnerability summary
CVE-2026-11736 is a medium (CVSS 4.9) Improper Input Validation vulnerability in netgear rax20_firmware. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.2% of scored vulnerabilities.
CVSS score
4.9/10
010
Medium · v3.1 (NVD)EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-08-2026PublishedVulnerability first disclosed.
- 12-08-2026Last modifiedVulnerability information updated.
Description
A stack-based buffer overflow vulnerability affects certain NETGEAR models allowing an authenticated admin user to make unauthorized modification to router software and functionality.
CVSS metrics
3 scores · 2 sources · 2 versionsLow 1.9Preferred score · CVE.org (CNA)
CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:L/U:AmberSourcesAll 2 agree
- NVDNIST1.9LowCVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:L/U:Amber
Medium 4.9Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
0.00 pp
From 0.51% on 20-09-2026
20-09-202620-10-2026
EPSS score0.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Netgear19 products
- rax20_firmwareAll versions (No fix recorded) | na
- rax35v2_firmware< V1.0.16.132 | < 1.0.16.132
- rax41_firmwareAll versions (No fix recorded) | na
- rax41v2_firmware< V1.1.4.28 | < 1.1.4.28
- rax42_firmwareAll versions (No fix recorded) | na
1 vendor · 19 products