Security readout for executives and security teams
Plain-English summary
CVE-2020-17403 affects Foxit Studio Photo 3.6.6.922. A crafted PSD file or malicious page could cause code to run with the user's privileges after user interaction. This matters where staff handle untrusted image files, but the provided sources do not show known exploitation or a named fix.
Executive priority
Treat this as a targeted endpoint risk, not an internet-wide emergency. Prioritize discovery and remediation for users handling external image files, because successful exploitation could run code with the affected user's privileges.
Technical view
The issue is a CWE-787 out-of-bounds write in PSD file handling. Improper validation of user-supplied data can write past an allocated structure and enable arbitrary code execution in the current process. The CVSS v3.0 score is 7.8 High, with user interaction required.
Likely exposure
Exposure is likely limited to endpoints running Foxit Studio Photo 3.6.6.922, especially systems where users open PSD files or browse content from untrusted sources. The source bundle does not identify other affected versions or products.
Exploitation context
The sources describe user-assisted exploitation through a malicious page or malicious file. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation in the wild.
Researcher notes
Evidence supports a PSD parsing out-of-bounds write in Foxit Studio Photo 3.6.6.922, reported as ZDI-CAN-11003. Patch details are not included in the bundle, so remediation should be tied to Foxit’s bulletin rather than assumed.
Mitigation direction
- Inventory endpoints for Foxit Studio Photo 3.6.6.922.
- Check Foxit security bulletins for vendor-confirmed fixed versions or guidance.
- Remove or upgrade unsupported installations where business use is not required.
- Restrict opening PSD files from untrusted sources until remediation is confirmed.
- Use endpoint controls to reduce impact from user-launched image-processing content.
Validation and detection
- Confirm installed Foxit Studio Photo versions through software inventory.
- Verify whether PSD files are associated with Foxit Studio Photo on endpoints.
- Check Foxit guidance before marking remediation complete.
- Review endpoint telemetry for suspicious Foxit Studio Photo crashes or child processes.
- Prioritize users who receive external image files or design assets.
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-787: 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-2020-17403 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
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.foxitsoftware.com/support/security-bulletins.htmlCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-20-1078/CVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.