Security readout for executives and security teams
Plain-English summary
CVE-2026-21682 is a high-severity memory corruption flaw in the iccDEV library used to process ICC color profiles. Organizations are exposed if applications or services accept or process color profile files using iccDEV before 2.3.1.2. The vendor advisory states 2.3.1.2 fixes the issue and no workarounds are available.
Executive priority
Treat as a high-priority dependency update where iccDEV is used in file-processing, imaging, printing, graphics, or color-management workflows. Business urgency is highest for internet-facing or partner-facing processing paths. There is a vendor patch, but no cited workaround and no cited active exploitation.
Technical view
Versions of International Color Consortium iccDEV before 2.3.1.2 contain a heap-buffer-overflow in CIccXmlArrayType::ParseText(). The CVSS 3.1 score is 8.8, with network attack vector, low complexity, no privileges required, and user interaction required. The issue is mapped to CWE-122 and CWE-20.
Likely exposure
Exposure is likely limited to systems, applications, pipelines, or products that embed iccDEV and process ICC color profiles, especially files from users, partners, or untrusted sources. Systems not using iccDEV, or already using 2.3.1.2 or later, are not indicated as affected by the provided sources.
Exploitation context
The CVE is not listed in CISA KEV, and the provided sources do not state active exploitation. The CVSS vector indicates exploitation requires user interaction, likely involving processing a crafted ICC profile through an affected iccDEV-based workflow. No exploit details should be assumed from the available evidence.
Researcher notes
Key evidence comes from the GitHub Security Advisory, CVE record, issue, and pull request. The advisory identifies the vulnerable function and patched version. The sources do not provide evidence of exploitation in the wild, affected downstream products, or alternative mitigations beyond updating.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications, services, and products that bundle or link iccDEV.
- Prioritize systems processing untrusted ICC color profiles.
- If upgrade is delayed, check vendor guidance because no workaround is listed.
- Ask third-party vendors whether their products include affected iccDEV versions.
Validation and detection
- Review SBOMs and dependency inventories for iccDEV versions below 2.3.1.2.
- Confirm runtime and packaged library versions, not only source repositories.
- Check vulnerability scanners for CVE-2026-21682 coverage.
- Review file-processing workflows that accept ICC profiles from untrusted sources.
- Verify upgrade completion through build records and deployed artifact metadata.
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-122: 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-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 lookupCVE-2026-21682 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/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://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-jq9m-54gr-c56cCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/178CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/229CVE 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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.