CVE-2025-34421
CVE-2025-34421 — MailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAISP.DLL
MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability that can lead to local arbitrary code execution. The MailEnable administrative executable attempts to load MEAISP.DLL from its installation directory without sufficient integrity validation or a secure search order. A local attacker with write access to that directory can plant a malicious MEAISP.DLL, which is then loaded on execution, resulting in attacker-controlled code running with the privileges of the process.
Published Updated Sources: cvelistV5, VulnCheck
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
0%
chance of exploitation in 30 days
CVSS base
8.5
HIGH
CISA SSVC assessment
Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.
Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script all four kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 8.5 | CVSS 4.0 | HIGH | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-427
Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.
- T1574.007Hijack Execution Flow: Path Interception by PATH Environment Variable
- T1574.009Hijack Execution Flow: Path Interception by Unquoted Path
- T1574.001Hijack Execution Flow: DLL search order hijacking
References
3 on the record
- mailenable.com/Standard-ReleaseNotes.txt
release-notes, patch
- www.mailenable.com/
product
- www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meaisp-dll
third-party-advisory
Elsewhere on this site
- mailenableevery CVE for this vendor
- CWE-427other pages naming this weakness
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.