CVE-2025-45797: totolink a950rg_firmware Out-of-bounds Write
CVSS: 9.8v3.1CriticalAnalyzed
Published 08-05-2025Last modified 12-05-2025
Vulnerability summary
CVE-2025-45797 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in totolink a950rg_firmware. EPSS estimates a 18.33% chance of exploitation in the next 30 days, higher than 97.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
18.33%
0%100%
Medium · +0.86 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 08-05-2025PublishedVulnerability first disclosed.
- 12-05-2025Last modifiedVulnerability information updated.
Description
TOTOlink A950RG V4.1.2cu.5204_B20210112 contains a buffer overflow vulnerability. The vulnerability arises from the improper input validation of the NoticeUrl parameter in the setNoticeCfg interface of /lib/cste_modules/system.so.
CVSS metrics
2 scores · 2 sources · 1 versionCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources2 sources · 6.5–9.8
- CVE.orgCNA6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NDiffers
EPSS trend
Probability
18.33%
Chance of exploitation in the next 30 days
Percentile
97%
Versus all other CVEs
30-day change
+0.86 pp
From 17.47% on 21-09-2026
21-09-202621-10-2026
EPSS score18.33%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCuicuishark Sheep Fishiot
Maturity: poc
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Affected systems
Totolink1 product
- a950rg_firmware4.1.2cu.5204_b20210112
1 vendor · 1 product
References
1 links- github.com/SunnyYANGyaya/…Exploit