Security readout for executives and security teams
Plain-English summary
CVE-2026-21487 affects iccDEV, a library/toolset for ICC color profile handling. A malformed profile can trigger memory-safety issues when loaded, potentially causing a crash and limited information exposure. Business urgency is moderate because exploitation requires local/user-assisted processing of a crafted file, but affected systems that ingest untrusted profiles should be prioritized.
Executive priority
Schedule remediation in the normal vulnerability cycle, with faster action for services or workflows handling untrusted image or color-profile files. This is not currently evidenced as exploited in the wild, but the high availability impact makes exposed parsing workflows worth prompt attention.
Technical view
Versions 2.3.1.1 and below contain out-of-bounds read, out-of-range pointer offset, and improper input validation in CIccProfile::LoadTag. CVSS 3.1 is 6.1: local attack vector, low complexity, no privileges, user interaction required, low confidentiality impact, high availability impact. Fixed in iccDEV 2.3.1.2.
Likely exposure
Exposure is most likely where iccDEV is embedded in tools, pipelines, or applications that parse ICC color profiles, especially from user-supplied files. The bundle lists iccDEV versions below 2.3.1.2 as affected. No CPEs or downstream affected products are provided.
Exploitation context
The CVSS vector indicates exploitation is local and requires user interaction, such as processing a crafted ICC profile. The provided sources do not state active exploitation, and the CVE is not marked in KEV. Treat as a file-processing availability risk with some confidentiality impact.
Researcher notes
The root issue is in CIccProfile::LoadTag and combines CWE-125, CWE-823, and CWE-20. Public sources include the GitHub advisory, issue, and fixing commit. Evidence does not support remote unauthenticated exploitation or active exploitation claims.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Inventory applications and build pipelines that include iccDEV.
- Limit processing of untrusted ICC profiles until upgraded.
- Check the GitHub advisory for any additional vendor guidance.
Validation and detection
- Confirm installed or vendored iccDEV versions are below 2.3.1.2.
- Review dependency manifests, source trees, and packaged binaries for iccDEV usage.
- Verify remediation by confirming version 2.3.1.2 or the referenced fixing commit is present.
- Prioritize systems that process externally supplied ICC profiles.
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-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-823: 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-2026-21487 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/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:L/I:N/A:H1.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-xq7x-9524-f7cpCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/issues/340CVE reference · x_refsource_MISC
- https://github.com/InternationalColorConsortium/iccDEV/commit/1516e2cafc253bb06fd3700d589a4ed0f09f7bd6CVE 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.
Out-of-bounds Read
Out-of-bounds Read 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.
Use of Out-of-range Pointer Offset
Use of Out-of-range Pointer Offset represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.