Security readout for executives and security teams
Plain-English summary
CVE-2018-3861 is a high-severity image-processing flaw in Computerinsel PhotoLine 20.53 for OS X. If a user opens a malicious TIFF image, the application can corrupt memory and allow attacker-controlled code execution.
Executive priority
Treat this as a targeted user-file risk. Prioritize remediation where design, marketing, support, or client-facing teams process externally supplied image files.
Technical view
The issue is an out-of-bounds write triggered while PhotoLine processes a specially crafted TIFF file. The CVSS 3.0 score is 8.8, with no privileges required but user interaction required. The source bundle names only Computerinsel PhotoLine 20.53 for OS X as affected.
Likely exposure
Exposure is most likely on macOS systems running PhotoLine 20.53 where users open TIFF images from email, websites, file shares, clients, or other untrusted sources.
Exploitation context
The sources describe code execution through a crafted TIFF, but do not cite active exploitation. The CVE is not marked as CISA KEV in the provided bundle.
Researcher notes
The available evidence supports memory corruption and potential code execution, but does not name a patch level or prove exploitation in the wild. Avoid broad product assumptions beyond PhotoLine 20.53 for OS X.
Mitigation direction
- Identify and upgrade or retire PhotoLine 20.53 for OS X installations.
- Check Computerinsel or vendor guidance for fixed versions or official workarounds.
- Limit TIFF handling from untrusted sources on affected systems.
- Use endpoint controls or sandboxing for image-processing workflows that receive external files.
Validation and detection
- Inventory macOS endpoints for PhotoLine 20.53 installations.
- Confirm whether users process externally supplied TIFF files.
- Review endpoint telemetry for PhotoLine crashes or suspicious child processes.
- Document compensating controls where immediate upgrade is not available.
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
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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-2018-3861 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0546CVE 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.