Security readout for executives and security teams
Plain-English summary
CVE-2026-21689 is a medium-severity flaw in iccDEV before 2.3.1.2. If an application processes a malicious ICC color profile using the vulnerable library, it may crash or lose availability. The advisory names no confidentiality or integrity impact, and user interaction is required.
Executive priority
Treat this as a targeted availability risk. Prioritize patching systems that process external ICC profiles or image-related content. It is not currently reported as actively exploited, but upgrading is straightforward because a fixed version is available.
Technical view
The issue is a type confusion vulnerability in CIccProfileXml::ParseBasic() in IccXML/IccLibXML/IccProfileXml.cpp. It affects iccDEV versions earlier than 2.3.1.2. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges required, user interaction required, and high availability impact.
Likely exposure
Exposure is most likely where iccDEV is embedded in software that accepts or processes ICC color profiles, especially from users, partners, uploads, documents, images, or automated workflows. 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 source bundle does not indicate active exploitation, and CISA KEV status is false. Exploitation would require a vulnerable iccDEV version to process a crafted ICC profile. The documented impact is denial of service rather than data theft or code execution.
Researcher notes
The advisory lists multiple CWE categories, while the title and description identify type confusion in ParseBasic(). Public sources provided do not include evidence of exploitation in the wild or a workaround. Assessment should focus on dependency presence and whether untrusted ICC profile parsing is reachable.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications and services that bundle or dynamically link iccDEV.
- Prioritize systems processing untrusted ICC profiles or user-supplied image/profile content.
- If immediate upgrade is not possible, check vendor guidance; no workaround is named.
Validation and detection
- Confirm installed or bundled iccDEV versions are 2.3.1.2 or later.
- Review dependency manifests, SBOMs, containers, and packaged applications for iccDEV.
- Verify profile-processing paths do not use vulnerable iccDEV builds.
- Track vendor advisories for downstream products that embed iccDEV.
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-190: 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 lookupCWE-232: 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 lookupCWE-690: 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-754: 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 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-5rqc-w93q-589mCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/382CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/423CVE 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.