High severity · published Jan 11, 2026
CVE-2026-0839
UTT 进取 520W APSecurity strcpy buffer overflow
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
A weakness has been identified in UTT 进取 520W 1.7.7-180627. Affected is the function strcpy of the file /goform/APSecurity. Executing a manipulation of the argument wepkey1 can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. 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)1.1% · higher than 65% 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-2026-0839
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0839
Exploit
https://github.com/GUOTINGTING2297/cve/blob/main/1234/29.md
Permissions Required
https://vuldb.com/?ctiid.340439
Third Party Advisory
https://vuldb.com/?id.340439
Third Party Advisory
https://vuldb.com/?submit.729028
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