CVE-2026-24115: tenda w20e_firmware Classic Buffer Overflow
Modified
Published 02-03-2026Last modified 03-03-2026
Vulnerability summary
CVE-2026-24115 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in tenda w20e_firmware. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.72%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github
Timeline
- 02-03-2026PublishedVulnerability first disclosed.
- 03-03-2026Last modifiedVulnerability information updated.
Description
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the sizes of `gstup` and `gstdwn` before concatenating them into `gstruleQos` may lead to buffer overflow.
CVSS metrics
2 scores · 2 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
Increase +0.03 pp
From 0.69% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundCvereport
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Tenda1 product
- w20e_firmware15.11.0.6
1 vendor · 1 product