CVE-2026-5103 details a command injection vulnerability in Totolink A3300R firmware version 17.0.0cu.557_b20221024, specifically affecting the `setUPnPCfg` function within `/cgi-bin/cstecgi.cgi` through manipulation of the `enable` argument. This flaw carries a high CVSSv3.1 score of 8.8, indicating that an authenticated remote attacker with low privileges can achieve high impacts on confidentiality, integrity, and availability with low attack complexity. Although not currently listed on the CISA KEV catalog or Hot List, public exploit code is available, which increases the immediate risk of exploitation, despite minimal community discussion or media coverage to date.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
17.0.0cu.557_b20221024CPE matchmatch criteria | cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.