TOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflow
Published Aug 1, 2024
8.7
HIGHCVSS 4.0
EPSS 1.20%
Description
A vulnerability was found in TOTOLINK A3300R 17.0.0cu.557_B20221024 and classified as critical. Affected by this issue is the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument File leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-273254 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
-
- Version 17.0.0cu.557_B20221024StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| TOTOLINK | n/a | n/a |
|
- 17.0.0cu.557_b20221024
-
- Version 17.0.0cu.557_b20221024StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| TOTOLINK | A3300r Firmware | n/a |
|
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:S/C:C/I:C/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Aug 1, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.20% (0.01203) | 67.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.20% (0.01203) | 64.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.43% (0.00427) | 60.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00179) | 56.46th | v3 (v2023.03.01) |
| Aug 1, 2024 | 0.04% (0.00045) | 16.23th | v3 (v2023.03.01) |
References (4)
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3300R/UploadCustomModule.md exploitTechnical DescriptionThird Party Advisory
- https://vuldb.com/?ctiid.273254 signaturepermissions-requiredPermissions RequiredVDB Entry
- https://vuldb.com/?id.273254 vdb-entrytechnical-descriptionPermissions RequiredVDB Entry
- https://vuldb.com/?submit.378351 third-party-advisoryThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3300R/UploadCustomModule.md | exploitTechnical DescriptionThird Party Advisory | |
| https://vuldb.com/?ctiid.273254 | signaturepermissions-requiredPermissions RequiredVDB Entry | |
| https://vuldb.com/?id.273254 | vdb-entrytechnical-descriptionPermissions RequiredVDB Entry | |
| https://vuldb.com/?submit.378351 | third-party-advisoryThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.