Security readout for executives and security teams
Plain-English summary
CVE-2026-21678 is a high-severity memory-safety flaw in iccDEV before 2.3.1.2. A user would need to process a malicious ICC profile or related input for impact. Successful exploitation could affect confidentiality, integrity, and availability of the local process. The issue is reported as fixed in version 2.3.1.2.
Executive priority
Prioritize remediation where iccDEV processes files from external or semi-trusted sources. This is not evidenced as internet-wormable or actively exploited, but memory corruption with high impact warrants timely patching in affected workflows.
Technical view
iccDEV contains a heap-buffer-overflow vulnerability in IccTagXml(), with related CWE mappings for out-of-bounds read/write, heap overflow, and improper input validation. The CVSS 3.1 score is 7.8: local attack vector, low complexity, no privileges required, user interaction required, and high CIA impact.
Likely exposure
Organizations are exposed if they use iccDEV libraries or tools before 2.3.1.2, especially in workflows that parse, convert, inspect, or transform ICC color profiles from users, partners, or automated pipelines.
Exploitation context
The provided sources do not indicate active exploitation, and the CVE is not marked KEV. The CVSS vector requires local access and user interaction, meaning exploitation likely depends on a crafted file being opened or processed by vulnerable iccDEV functionality.
Researcher notes
Public sources identify the vulnerable function and patch references, but do not provide broad product impact beyond iccDEV. Avoid assuming downstream affected products without dependency evidence. Focus validation on version inventory, ICC parsing workflows, and confirmation that the referenced fix is present.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications, build systems, or tools bundling iccDEV.
- Restrict processing of untrusted ICC profiles until upgraded.
- Review the linked advisory and patch for vendor-specific guidance.
Validation and detection
- Check deployed iccDEV versions are 2.3.1.2 or later.
- Search software bills of materials for InternationalColorConsortium iccDEV.
- Confirm vulnerable ICC-processing paths are patched or disabled.
- Review dependency bundles for statically included iccDEV code.
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-125: 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-787: 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-2026-21678 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/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-9rp2-4c6g-hppfCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/55CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/pull/219CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/commit/c6c0f1cf45b48db94266132ccda5280a1a33569dCVE 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.