Description
A vulnerability was detected in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/formPptpClientConfig. Performing a manipulation of the argument EncryptionMode results in buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
utt: 520w firmware; utt: 520w
References6
- github.com/cymiao1978/cve/blob/main/new/23.md ExploitThird Party Advisory
- github.com/cymiao1978/cve/blob/main/new/23.md#poc ExploitThird Party Advisory
- github.com/cymiao1978/cve/blob/main/new/23.md ExploitThird Party Advisory
- vuldb.com/?ctiid.339496 Permissions RequiredVDB Entry
- vuldb.com/?id.339496 Third Party AdvisoryVDB Entry
- vuldb.com/?submit.725817 Third Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
7.4
HIGH
Score source: CNA
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: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 - EPSS — exploit probability
- 1% percentile: 50 · as of 11 November 2026
- CWE
- CWE-119CWE-120
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