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NVD / CVE Program· CNA GitHub_M

CVE-2026-21490: iccDEV has heap buffer overflow in CIccTagLut16::Validate()

HighCVSS 7.1 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • No fixed version is recorded, but the references include a patch (commit or PR) link.

Low priority for now. See the fix and affected versions sections below.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. A vulnerability present in versions prior to 2.3.1.2 affects users of the iccDEV library who process ICC color profiles. It results in heap buffer overflow in `CIccTagLut16::Validate()`. Version 2.3.1.2 contains a patch. No known workarounds are available.

Published
Jan 6, 2026
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.1
CNA · GitHub_M
6.1
1.0 point gap

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-21490

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
coloriccdev

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • InternationalColorConsortium iccDEV

    • < 2.3.1.2affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • color iccdevbefore 2.3.1.2

Same product

color: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-21679iccDEV has heap-buffer-overflow vulnerability in CIccLocalizedUnicode::GetText()
    39Monitor
  • CVE-2026-21675iccDEV has a Use After Free vulnerability in CIccCmm class via improper hint manager object deletion
    39Monitor
  • CVE-2026-24412iccDEV has Heap Buffer Overflow in icCurvesFromXml()
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-21489Jan 6, 2026 · iccDEV has Out-of-bounds Read and Integer Underflow (Wrap or Wraparound)
    28Monitor
  • ← EarlierCVE-2026-21493Jan 6, 2026 · iccDEV has Type Confusion during XML Curve Serialization
    26Monitor
  • Later →CVE-2026-21491Jan 6, 2026 · iccDEV has unicode buffer overflow in CIccTagTextDescription
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-216760 days aparticcDEV has a Heap-based Buffer Overflow in its CIccMBB::Validate() function
    35Monitor
  • CVE-2026-2485221 days aparticcDEV has a heap-buffer-overflow in icXmlParseTextString()
    32Monitor
  • CVE-2026-214860 days apartUse After Free and Heap-based Buffer Overflow and Integer Overflow or Wraparound and Out-of-bounds Write in iccDEV
    31Monitor
  • CVE-2026-215041 days apartHeap Buffer Overflow in iccDEV ToneMap Parser
    31Monitor
  • CVE-2026-3179663 days aparticcDEV has a heap-based buffer overflow in icCurvesFromXml()
    31Monitor
  • CVE-2026-214880 days aparticcDEV has Out-of-bounds Read, Heap-based Buffer Overflow and Improper Null Termination
    28Monitor

Not on record for this CVE: EPSS history · researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records