Security readout for executives and security teams
Plain-English summary
This flaw affects older Documalis desktop PDF tools. A malicious PDF containing a malformed JPEG could crash the application and may run code with the logged-in user’s rights. It requires a user to open the file, so the main business risk is phishing-style document delivery to workstations, not direct internet exposure.
Executive priority
Treat as a targeted workstation risk. Prioritize remediation where document-handling staff use the affected Documalis tools, especially if they receive external PDFs. It is not shown as actively exploited or remotely reachable without user interaction, so urgency is moderate rather than emergency-level.
Technical view
CVE-2020-7374 is a CWE-120 stack-based buffer overflow in JPEG validation inside PDFs handled by Documalis Free PDF Editor 5.7.2.26 and Free PDF Scanner 5.7.2.122. CVSS 3.1 is 5.3 with local attack vector, low complexity, no privileges, and required user interaction. Successful exploitation can provide code execution as the application user.
Likely exposure
Exposure is likely limited to endpoints where the specified Documalis Free PDF Editor or Free PDF Scanner versions are installed. Risk increases for users who receive and open untrusted PDFs from email, web downloads, file shares, or external parties.
Exploitation context
The CVE is not listed as KEV in the provided bundle, so active exploitation is not established. A Rapid7 Metasploit Framework pull request is cited, indicating public exploit-related research/tooling discussion. Exploitation still depends on convincing a user to open a malicious PDF.
Researcher notes
The source bundle does not name a patched Documalis version or vendor mitigation. Keep analysis constrained to the two listed product versions. The CVSS vector is local with required user interaction, despite the description’s remote code execution outcome after a malicious document is opened.
Mitigation direction
- Inventory and remove affected Documalis versions where business use is not required.
- Check Documalis or trusted vendor guidance for fixed versions or supported replacements.
- Use alternative supported PDF tooling if no vendor fix is available.
- Block or sandbox untrusted PDFs for users who process external documents.
- Apply endpoint controls that restrict unexpected child processes from PDF tools.
Validation and detection
- Search software inventory for Documalis Free PDF Editor 5.7.2.26.
- Search software inventory for Documalis Free PDF Scanner 5.7.2.122.
- Confirm whether users handling external PDFs have these tools installed.
- Review endpoint telemetry for crashes or unusual activity from Documalis executables.
- Verify remediation by confirming affected versions are upgraded, removed, or isolated.
Public sources used
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-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2020-7374 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
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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.
CVSS vector scores
1 official scoreWe 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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L1.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/rapid7/metasploit-framework/pull/13517CVE reference · x_refsource_MISC
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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.