CVE-2025-51630: totolink n350rt_firmware Classic Buffer Overflow
CVSS: 9.8v3.1CriticalAnalyzed
Published 17-07-2025Last modified 17-07-2025
Vulnerability summary
CVE-2025-51630 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in totolink n350rt_firmware. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.51%
0%100%
Low · +0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 17-07-2025PublishedVulnerability first disclosed.
- 17-07-2025Last modifiedVulnerability information updated.
Description
TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.
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
0.51%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
+0.06 pp
From 0.45% on 21-09-2026
21-09-202621-10-2026
EPSS score0.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundTotolink N350Rt Vulnerability
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink1 product
- n350rt_firmware9.3.5u.6139_b20201216
1 vendor · 1 product
References
1 links- github.com/luckysmallbird/Totolink-N350RT-Vulnerability/blob/main/1-ePort.mdExploitThird Party Advisory