CVE-2025-69763: tenda ax3_firmware Stack-based Buffer Overflow
CVSS: 9.8v3.1CriticalAnalyzed
Published 21-01-2026Last modified 22-01-2026
Vulnerability summary
CVE-2025-69763 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in tenda ax3_firmware. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 59% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.89%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference
Timeline
- 21-01-2026PublishedVulnerability first disclosed.
- 22-01-2026Last modifiedVulnerability information updated.
Description
Tenda AX3 firmware v16.03.12.11 contains a stack overflow in formSetIptv via the vlanId parameter, which can cause memory corruption and enable remote code execution.
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
0.89%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
-0.01 pp
From 0.91% on 21-09-2026
21-09-202621-10-2026
EPSS score0.89%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (river-brow-763.notion.site)
Maturity: unknown
Exploit Reference (river-brow-763.notion.site)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Tenda1 product
- ax3_firmware16.03.12.11
1 vendor · 1 product
References
2 links- river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formSetIptv-2c9a595a7aef8025a3c6c4b102d95dd4ExploitThird Party Advisory
- river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formSetIptv-2c9a595a7aef8025a3c6c4b102d95dd4ExploitThird Party Advisory