SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-26740

Arbitrary file upload vulnerability sysupload.php in millken doyocms 2.3 allows attackers to execute arbitrary code.

CRITICAL 9.8EPSS 1.60%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Arbitrary file upload vulnerability sysupload.php in millken doyocms 2.3 allows attackers to execute arbitrary code.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.60% probability · 76th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-434
Affected
doyocms project/doyocms
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.60%26 October 202626 October 2026

EPSS 1.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.