Security readout for executives and security teams
Plain-English summary
CVE-2026-21506 is a crash risk in iccDEV before version 2.3.1.2. A malformed ICC profile XML parsing path can trigger a null pointer dereference, causing denial of service. The issue affects availability, not data theft or tampering, based on the published CVSS details.
Executive priority
Handle in normal patch cycles unless iccDEV processes untrusted profile files in production workflows. Prioritize faster where crashes could disrupt customer-facing rendering, print, imaging, or automated content-processing services.
Technical view
iccDEV versions earlier than 2.3.1.2 contain a null pointer dereference in CIccProfileXml::ParseBasic(). The CVSS vector is AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, indicating local attack, low complexity, no privileges, user interaction required, and high availability impact.
Likely exposure
Exposure is most likely where iccDEV libraries or tools process ICC profile XML files from users, partners, automated workflows, or test corpora. Systems not using iccDEV, or already on 2.3.1.2 or later, are not indicated as affected by the provided sources.
Exploitation context
The sources do not report active exploitation, and the CVE is not marked as CISA KEV. The CVSS vector indicates exploitation requires local access and user interaction, limiting broad remote risk but still relevant for file-processing pipelines.
Researcher notes
The public record identifies CWE-476 and CWE-20. The fix is linked through the GitHub advisory, pull request, and commit. Evidence supports denial of service only; there is no source-grounded indication of confidentiality or integrity impact.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications or pipelines that bundle or call iccDEV.
- Limit processing of untrusted ICC profile XML files where upgrade is delayed.
- Monitor the vendor advisory and repository for additional guidance.
Validation and detection
- Check deployed iccDEV version numbers against 2.3.1.2.
- Review dependency inventories for InternationalColorConsortium iccDEV usage.
- Confirm patched code or release is present in built artifacts.
- Test file-processing services for controlled failure handling after update.
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-20: 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-2026-21506 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-wfm7-m548-x4vpCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/371CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/418CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/commit/f2ea32372ad3ebbd29147940229cb9c5548fe033CVE 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.