Security readout for executives and security teams
Plain-English summary
Exiv2 0.27.99.0 can crash when processing a specially crafted TIFF file. The reported impact is denial of service, not data theft or code execution. Risk is highest where Exiv2 processes untrusted image files automatically, such as upload pipelines, asset scanners, or metadata services.
Executive priority
Treat this as a targeted availability risk for systems that process external images. Prioritize exposed upload and media-processing paths, but do not escalate as active exploitation or code execution based on the supplied evidence.
Technical view
The CVE describes a floating-point exception in Exiv2's printLong function in tags_int.cpp, triggered by a crafted TIFF file. The supplied record does not provide CVSS, CWE, patch details, or broader affected version ranges beyond Exiv2 0.27.99.0.
Likely exposure
Organizations are likely exposed if they run Exiv2 0.27.99.0 in workflows that parse TIFF metadata from untrusted users or external sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The documented attacker outcome is application denial of service via crafted TIFF input.
Researcher notes
Evidence is sparse: the CVE names the vulnerable function and file type, but provides no CVSS, CWE, exploit status, or complete version range. Validate exposure through dependency inventory and vendor advisory review.
Mitigation direction
- Inventory systems and applications using Exiv2, especially image upload or metadata-processing services.
- Check Exiv2 and Gentoo advisory guidance for fixed package versions or recommended updates.
- Reduce automatic processing of untrusted TIFF files until affected deployments are addressed.
- Ensure services that call Exiv2 restart cleanly after parser crashes.
Validation and detection
- Confirm whether Exiv2 0.27.99.0 is installed or bundled in production software.
- Identify services that pass user-controlled TIFF files to Exiv2.
- Review package advisories for available fixed versions before remediation.
- Check logs for unexplained Exiv2 crashes during TIFF metadata processing.
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.
CVE-2020-18774 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Exiv2/exiv2/issues/759CVE reference
- GLSA-202312-06CVE reference · vendor-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.