High severity · published Mar 22, 2026
CVE-2026-4554
Tenda F453 WriteFacMac FormWriteFacMac privilege escalation
8.8
CVSS
3.8%
EPSS
No
On KEV
Description
A security flaw has been discovered in Tenda F453 1.0.0.3. The affected element is the function FormWriteFacMac of the file /goform/WriteFacMac. The manipulation of the argument mac results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
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)3.8% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
F4
F453 · Tenda
1.0.0.3 · source: vendor
FF
F453 Firmware · Tenda
1.0.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4554
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4554
Exploit
https://github.com/Litengzheng/vul_db/blob/main/F453/vul_95/README.md
Permissions Required
https://vuldb.com/?ctiid.352381
Third Party Advisory
https://vuldb.com/?id.352381
Third Party Advisory
https://vuldb.com/?submit.774933
Product
https://www.tenda.com.cn/
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