Critical severity · published Feb 9, 2026
CVE-2026-2234
HGiga｜C&Cm@il - Missing Authentication
9.1
CVSS
0.5%
EPSS
No
On KEV
Description
C&Cm@il developed by HGiga has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to read and modify any user's mail content.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
C&Cm@il package olln-base · HGiga
before 7.0-978 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2234
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2234
www.twcert.org.tw
https://www.twcert.org.tw/en/cp-139-10704-d5aba-2.html
www.twcert.org.tw
https://www.twcert.org.tw/tw/cp-132-10703-3d02f-1.html
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