Security readout for executives and security teams
Plain-English summary
CVE-2026-21492 can crash software that uses iccDEV to process ICC color profiles. An attacker would need a user or workflow to process a crafted profile locally. The main business impact is availability disruption, not data theft or tampering. Fixed version 2.3.1.2 is available.
Executive priority
Treat as a routine but timely availability fix. Prioritize systems that process user-supplied images, print assets, or ICC profiles in automated workflows. This is not currently supported as an emergency exploitation event by the provided sources.
Technical view
iccDEV versions before 2.3.1.2 contain a NULL pointer member call in the ToneMap Writer path. The CVSS 3.1 score is 5.5, with local attack vector, low complexity, no privileges, required user interaction, and high availability impact. The advisory maps this to CWE-252 and CWE-476.
Likely exposure
Exposure is limited to applications, pipelines, or tools that embed or invoke iccDEV and process ICC color profiles. Systems not using iccDEV, or not accepting profile files from users or external workflows, are less likely to be affected.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked KEV. Exploitation requires local processing of a malicious ICC profile and user interaction. Expected impact is process crash or denial of service rather than confidentiality or integrity compromise.
Researcher notes
Public references identify issue 394, pull request 401, and two patch commits. The record indicates a NULL pointer member call in ToneMap Writer. Sources do not provide evidence of remote exploitation, privilege escalation, data exposure, or known exploitation in the wild.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify products or internal tools that bundle iccDEV.
- Restrict untrusted ICC profile processing until upgraded.
- Check the GitHub advisory for any updated vendor guidance.
- No workaround is listed in the provided sources.
Validation and detection
- Inventory installed iccDEV versions and embedded copies.
- Confirm affected deployments are below 2.3.1.2.
- Review applications that process ICC color profiles.
- Verify upgraded builds include the referenced patch commits.
- Monitor vendor advisory and issue thread for updates.
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-252: 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 lookupCWE-476: 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 lookupCVE-2026-21492 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/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:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/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-xpq3-v3jj-mgvxCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/394CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/401CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/commit/b200a629ada310137d6ae5c53fc9e6d91a4b0daeCVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/commit/e72361d215351cbac0002466c4f936e94d6a99e7CVE 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.
Unchecked Return Value
Unchecked Return Value represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.