Security readout for executives and security teams
Plain-English summary
This vulnerability affects HUMAN TALK DaView Indy, DaVA+, and DaOffice when processing crafted PDF content that reaches the JPEG parsing module. Successful exploitation could let code run on the affected system, putting confidentiality, integrity, and availability at risk. Exposure depends on whether these products are installed and used to open untrusted files.
Executive priority
Prioritize this where the affected Korean document-viewing software is present, especially on workstations handling external PDFs. The business risk is high impact code execution, but urgency depends on installation footprint and lack of current evidence for active exploitation.
Technical view
CVE-2020-7816 is described as a stack overflow read in the JPEG image parsing module of DaView Indy, DaVA+, and DaOffice. The CVSS 3.1 score is 7.0 with high confidentiality, integrity, and availability impact, high attack complexity, no privileges required, and user interaction required.
Likely exposure
Likely exposure is limited to environments with HUMAN TALK DaView Indy, DaVA+, or DaOffice installed. Versions are unspecified in the provided sources, so teams should inventory all installations and treat any unsupported or unknown version as needing vendor review.
Exploitation context
The sources describe exploitation through a crafted PDF file, with user interaction reflected in the CVSS vector. The bundle does not show CISA KEV listing or other cited evidence of active exploitation. Exploit status should therefore be treated as unconfirmed.
Researcher notes
The record has incomplete operational detail: affected versions are unspecified, CWE is absent, and no fix is included in the provided bundle. The description says remote attacker, while CVSS uses local attack vector and user interaction; model this as malicious file delivery requiring local opening or processing.
Mitigation direction
- Check HUMAN TALK or KrCERT guidance for affected versions and fixes.
- Update or replace affected software if vendor guidance provides a safe version.
- Limit opening of untrusted PDFs in affected applications.
- Use email and web filtering to reduce delivery of suspicious PDF files.
- Consider temporary removal where the software is not business-critical.
Validation and detection
- Inventory endpoints for DaView Indy, DaVA+, and DaOffice installations.
- Confirm installed versions against vendor or KrCERT advisory details.
- Review file-association defaults for PDF handling on managed endpoints.
- Search security logs for suspicious PDF delivery or execution events.
- Verify compensating controls for inbound attachments and downloads.
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.
Execution 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-2020-7816 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/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:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35483CVE reference · x_refsource_CONFIRM
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.