Security readout for executives and security teams
Plain-English summary
CVE-2026-21680 can make software using iccDEV crash when it processes a specially crafted ICC color profile. The impact is availability only: sources do not indicate data theft or code execution. Organizations using iccDEV before 2.3.1.2 should prioritize upgrading where ICC profiles are accepted from users, partners, or untrusted files.
Executive priority
Treat as a moderate availability risk. Patch promptly for internet-facing or automated file-processing environments, especially where ICC profiles can come from outside the organization. This is less urgent than code-execution flaws, but crashes in production processing pipelines can still disrupt business operations.
Technical view
iccDEV versions before 2.3.1.2 contain a NULL pointer dereference in CIccProfile::CheckTagTypes(). The CVSS 3.1 score is 6.5 with network attack vector, low complexity, no privileges, user interaction required, and high availability impact. The vendor advisory states 2.3.1.2 contains the patch and no workarounds are available.
Likely exposure
Exposure is likely in applications, services, or workflows that use the iccDEV library to parse or validate ICC color profiles. Risk is higher where profiles are uploaded, received in documents/images, or processed automatically from untrusted sources.
Exploitation context
Sources support a denial-of-service scenario caused by processing a malformed ICC profile. User interaction is required under the CVSS vector. There is no KEV listing and the provided sources do not state active exploitation in the wild.
Researcher notes
The public description identifies CWE-476 and CIccProfile::CheckTagTypes() as the affected area. The advisory says versions before 2.3.1.2 are affected and no workaround exists. Provided sources do not establish confidentiality, integrity, privilege escalation, or active exploitation impact.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications or pipelines that bundle or link iccDEV.
- Prioritize systems processing ICC profiles from untrusted sources.
- If upgrade timing is uncertain, monitor vendor guidance for supported mitigations.
- Restrict untrusted ICC profile processing where operationally feasible.
Validation and detection
- Confirm deployed iccDEV versions are 2.3.1.2 or later.
- Review software composition data for iccDEV dependencies.
- Check image, print, color, and document-processing workflows for ICC parsing.
- Verify upgraded builds include the patched iccDEV dependency.
- Document any systems still processing untrusted ICC profiles.
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-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-21680 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-mgp7-w4w3-mhx4CVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/322CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/325CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.