Security readout for executives and security teams
Plain-English summary
CMSimple_XH 1.7.4 can let a logged-in administrator turn normal content editing into server-side code execution. This is serious for any exposed site because compromise of an admin account could become full server compromise, not just website defacement.
Executive priority
Prioritize exposed CMSimple_XH 1.7.4 sites because admin compromise could become server compromise. Treat as high priority, but not the same urgency as unauthenticated internet RCE unless credentials are suspected compromised.
Technical view
The source bundle describes authenticated remote code execution in CMSimple_XH 1.7.4 content editing. The CVSS v4 vector is network-accessible with low attack complexity but high privileges required, and high confidentiality, integrity, and availability impact. The weakness is mapped to CWE-94.
Likely exposure
Likely exposure is CMSimple_XH 1.7.4 deployments, especially internet-facing sites with reachable administrative access. Exploitation requires valid administrative credentials, so credential theft, reused passwords, or malicious insiders materially increase risk.
Exploitation context
A public ExploitDB reference is listed, so exploit information exists publicly. The source bundle does not identify CISA KEV listing or active exploitation. Do not assume broad exploitation without additional evidence.
Researcher notes
Evidence supports authenticated RCE affecting CMSimple_XH 1.7.4 only. The bundle does not provide a confirmed patch version or active exploitation evidence. Avoid expanding scope beyond that version without vendor confirmation.
Mitigation direction
- Confirm whether CMSimple_XH 1.7.4 is deployed.
- Check vendor guidance for fixed versions or official remediation.
- Restrict administrative access to trusted users and networks.
- Strengthen administrator authentication and credential hygiene.
- Review the site for unexpected executable PHP files.
- Back up evidence before removing suspicious files.
Validation and detection
- Inventory CMSimple_XH versions across public websites.
- Verify whether administrative interfaces are internet reachable.
- Review web roots and content areas for unexpected PHP files.
- Check logs for unusual authenticated content-editing activity.
- Confirm remediation against official vendor or advisory guidance.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47736 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50367CVE reference, VulnCheck · exploit
- Official Vendor HomepageCVE reference, VulnCheck · product
- VulnCheck Advisory: CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content EditingCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.