High severity · published Jan 19, 2026
CVE-2026-1139
UTT 进取 520W ConfigExceptMSN strcpy buffer overflow
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability has been found in UTT 进取 520W 1.7.7-180627. This vulnerability affects the function strcpy of the file /goform/ConfigExceptMSN. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
进5
进取 520W · UTT
1.7.7-180627 · source: vendor
5F
520w Firmware · Utt
through 1.7.7-180627 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1139
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1139
Exploit
https://github.com/cymiao1978/cve/blob/main/new/34.md
Permissions Required
https://vuldb.com/?ctiid.341730
Third Party Advisory
https://vuldb.com/?id.341730
Third Party Advisory
https://vuldb.com/?submit.735299
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