CVE-2023-36947: totolink a7000r_firmware Out-of-bounds Write
Modified
Published 16-10-2023Last modified 12-09-2024
Vulnerability summary
CVE-2023-36947 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in totolink a7000r_firmware. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.03%
0%100%
Low · +0.21 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github
Timeline
- 16-10-2023PublishedVulnerability first disclosed.
- 12-09-2024Last modifiedVulnerability information updated.
Description
TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the File parameter in the function UploadCustomModule.
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 · 8.8–9.8
- CVE.orgCNA8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
Increase +0.21 pp
From 0.82% 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 foundBug Submit
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
Totolink2 products
- a7000r_firmware9.1.0u.6115_b20201022
- x5000r_firmware9.1.0u.6118_b20201102
1 vendor · 2 products