Security readout for executives and security teams
Plain-English summary
CVE-2026-21488 affects iccDEV, a library/toolset for ICC color profile handling. A malformed ICC profile processed by vulnerable versions can trigger memory-safety errors. Business impact is mainly application crash or denial of service, with limited information exposure possible. The issue is fixed in iccDEV 2.3.1.2.
Executive priority
Treat as a moderate-priority patch for systems that process user-supplied color profiles. Prioritize exposed desktop, media, imaging, print, or automated file-processing workflows. Lower urgency applies where iccDEV is absent or only processes trusted internal profiles.
Technical view
Versions 2.3.1.1 and below are vulnerable in CIccTagText::Read to out-of-bounds read, heap-based buffer overflow, and improper null termination. CVSS 3.1 is 6.1 with local attack vector and required user interaction. Impact is low confidentiality, no integrity impact, and high availability impact.
Likely exposure
Exposure is most likely where iccDEV is directly used, embedded, or packaged in software that parses ICC color profiles. Risk increases if users can open or import untrusted profile files. The source bundle does not identify downstream products or operating-system packages.
Exploitation context
The CVSS vector indicates exploitation requires local access and user interaction, such as causing a vulnerable application to process a crafted ICC profile. The CVE is not listed as KEV, and the provided sources do not report active exploitation.
Researcher notes
The strongest evidence is the GitHub advisory and upstream commit. Public details name the vulnerable function and bug classes but do not provide broader exploit telemetry. No downstream affected products are listed in the provided sources, so dependency tracing is important.
Mitigation direction
- Upgrade iccDEV to version 2.3.1.2 or later.
- Identify applications or internal tools that bundle vulnerable iccDEV versions.
- Limit processing of untrusted ICC profiles until patched.
- Monitor the GitHub advisory for any revised vendor guidance.
Validation and detection
- Check iccDEV version and confirm it is at least 2.3.1.2.
- Review dependency manifests, SBOMs, and bundled third-party library copies.
- Verify patched builds include the referenced upstream fix commit.
- Confirm workflows that import ICC profiles use the updated library.
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
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CWE-122: Exact CWE lookup
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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-170: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-21488 mapping review
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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-4j2g-rvv4-86vgCVE reference · x_refsource_CONFIRM
- https://github.com/InternationalColorConsortium/iccDEV/commit/9daaccceb231c43db8cab312ee5bbe9d2aa6b153CVE 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.
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 Null Termination
Improper Null Termination represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.