Security readout for executives and security teams
Plain-English summary
CVE-2026-21690 is a medium-severity flaw in iccDEV, a library and toolset for ICC color profile handling. If an application processes a crafted ICC profile using affected versions, it may suffer limited confidentiality, integrity, and availability impact. Organizations using iccDEV should prioritize upgrading, especially where untrusted color profiles are accepted.
Executive priority
Treat this as a targeted remediation item, not an emergency. Patch systems that process ICC profiles from untrusted sources first. Business urgency is moderate because impact is limited, but exposure may be hidden inside applications or media-processing pipelines.
Technical view
Versions of International Color Consortium iccDEV before 2.3.1.2 contain a type confusion issue in CIccTagXmlTagData::ToXml(). The advisory lists CWE-20, CWE-457, and CWE-475. CVSS 3.1 is 6.3 with network attack vector, low complexity, no privileges required, and user interaction required. Version 2.3.1.2 contains the patch.
Likely exposure
Exposure is likely limited to systems, applications, or workflows that use iccDEV before 2.3.1.2 and process ICC color profiles. Risk is higher where profiles originate from users, partners, uploads, email, or other untrusted sources.
Exploitation context
The public sources do not state active exploitation, and the CVE is not marked KEV. The CVSS vector indicates exploitation requires user interaction but no privileges. Sources do not provide confirmed exploit availability or real-world abuse details.
Researcher notes
The sources identify the vulnerable function and fixed version, but do not describe exploit mechanics, proof of concept status, or affected downstream products. Validation should focus on dependency discovery and code paths that convert ICC tag XML data. Avoid assuming impact beyond the published CVSS and advisory.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify products or internal tools that embed or package iccDEV.
- Restrict processing of untrusted ICC profiles until upgraded.
- Monitor the vendor advisory for any additional guidance.
- No workaround is listed in the provided sources.
Validation and detection
- Check deployed iccDEV versions for releases earlier than 2.3.1.2.
- Review software bills of materials for iccDEV dependency usage.
- Confirm color-profile processing paths do not use vulnerable library builds.
- Validate upgrade deployment in applications that parse ICC profiles.
- Track vendor advisory, issue, and pull request for patch details.
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-457: 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-475: 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-2026-21690 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
- 6.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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:L/I:L/A:L2.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-2f26-vh48-38g6CVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/393CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/426CVE 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Use of Uninitialized Variable
Use of Uninitialized Variable represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Undefined Behavior for Input to API
Undefined Behavior for Input to API represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.