CVE-2026-27175

CVE Enrichment

CVSS: 9.2 CRITICAL
EPSS: 6.90%
EPSS Percentile: 94.11%
CISA KEV: Not listed

Description

MajorDoMo (aka Major Domestic Module) is vulnerable to unauthenticated OS command injection via rc/index.php. The $param variable from user input is interpolated into a command string within double quotes without sanitization via escapeshellarg(). The command is inserted into a database queue by safe_exec(), which performs no sanitization. The cycle_execs.php script, which is web-accessible without authentication, retrieves queued commands and passes them directly to exec(). An attacker can exploit a race condition by first triggering cycle_execs.php (which purges the queue and enters a polling loop), then injecting a malicious command via the rc endpoint while the worker is polling. The injected shell metacharacters expand inside double quotes, achieving remote code execution within one second.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: [email protected]
Published: 19-Feb-2026 05:16
Last Modified: 17-Jun-2026 17:26
EPSS Date: 2026-11-04
CWE: CWE-78

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:P /
                            PR:N /
                            UI:N /
                            VC:H /
                            VI:H /
                            VA:H /
                            SC:N /
                            SI:N /
                            SA:N /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

CNA Products / Version Status

sergejey · MajorDoMo Source: CNA · [email protected]
Default status: unknown

0 ≤ version ≤ * — affected (custom)

Affected Products / Versions

mjdm / majordomo Source: NVD CPE · affected
Version / affected range: -
cpe:2.3:a:mjdm:majordomo:-:*:*:*:*:*:*:*

References

Last enrichment sync: 05-Nov-2026 10:25
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

While CVE-2026-27175 is a critical command injection vulnerability that started seeing exploitation on April 13, CVE-2026-27174 allows unauthenticated remote code execution via the PHP console in the admin panel and was Weekly Security Roundup: KelpDAO Exploit, Malicious npm Packages, Active RCEs and More

CVE (5)

Malware (5)

People (3)

Threat Actors (7)

MITRE ATT&CK (7)

Vendors (6)

Products (9)

Tools (4)

Industries (5)

Countries (5)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.