CVE-2026-5102A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-74, CWE-77
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
totolink a3300r_firmware totolink:a3300r_firmware | 17.0.0cu.557_b20221024 | NVD |
References
- https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.mdexploit, third-party-advisory
- https://vuldb.com/submit/779129permissions-required, vdb-entry
- https://vuldb.com/vuln/354127third-party-advisory, vdb-entry
- https://vuldb.com/vuln/354127/ctithird-party-advisory, vdb-entry
- https://www.totolink.net/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.