CVE-2026-34556
Heap Buffer Overflow in iccDEV icAnsiToUtf8 Causes Crash
Publication date: 2026-03-31
Last updated on: 2026-04-20
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| color | iccdev | to 2.3.1.6 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a heap-buffer-overflow (HBO) in the icAnsiToUtf8() function within the iccDEV libraries and tools used for ICC color management profiles. It occurs when a specially crafted ICC profile causes the function to treat an input buffer as a C-string, leading to operations that rely on strlen() and null-termination reading beyond the allocated memory buffer. This results in an out-of-bounds read error.
How can this vulnerability impact me? :
The vulnerability can cause a heap-buffer-overflow which may lead to application crashes or undefined behavior when processing malicious ICC profiles. According to the CVSS score, it has a high impact on availability (A:H) but does not affect confidentiality or integrity. This means it can disrupt service or cause denial of service but does not directly lead to data leakage or modification.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update iccDEV to version 2.3.1.6 or later, where the heap-buffer-overflow issue in icAnsiToUtf8() has been patched.