CVE-2026-5103
Last modified
CVE-2026-5103 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 3.64% chance of exploitation in the next 30 days.
Description
A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument enable causes command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Totolink | A3300r Firmware | 17.0.0cu.557_b20221024 |
References
- https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_injectExploit, Third Party Advisory
- https://vuldb.com/submit/779140Permissions Required, VDB Entry
- https://vuldb.com/vuln/354128Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/354128/ctiThird Party Advisory, VDB Entry
- https://www.totolink.net/Product
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-5103?
How severe is CVE-2026-5103?
How do I fix CVE-2026-5103?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-5100The AWP Classifieds plugin for WordPress is vulnerable to SQ…7.5
- CVE-2026-5101A vulnerability was identified in Totolink A3300R 17.0.0cu.5…8.8
- CVE-2026-5102A security flaw has been discovered in Totolink A3300R 17.0.…8.8
- CVE-2026-51025Cross Site Scripting vulnerability in fuint Member Marketing…6.1
- CVE-2026-51026Directory Traversal vulnerability in FileThingie v.2.5.7 all…6.5
- CVE-2026-51027An issue in FileThingie v.2.5.7 allows a remote attacker to …9.9
- CVE-2026-51031FlareSolverr before version 3.4.7 contains a server-side req…7.5
- CVE-2026-5104A security vulnerability has been detected in Totolink A3300…8.8
- CVE-2026-5105A vulnerability was detected in Totolink A3300R 17.0.0cu.557…8.8
- CVE-2026-5106A flaw has been found in code-projects Exam Form Submission …4.8
- CVE-2026-5107A vulnerability has been found in FRRouting FRR up to 10.5.1…4.2
- CVE-2026-51077SQL injection vulnerability in Dede CMS v.5.7.118 allows a r…7.5
Are you affected by CVE-2026-5103?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST