CVE-2026-4775
Signed Integer Overflow in libtiff Causes Remote Code Execution
Publication date: 2026-03-24
Last updated on: 2026-04-30
Assigner: Red Hat, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 6.0 |
| libtiff | libtiff | * |
| debian | debian_linux | 11.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | hardened_images | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a flaw in the libtiff library involving a signed integer overflow in the putcontig8bitYCbCr44tile function. A remote attacker can exploit this by providing a specially crafted TIFF file.
The flaw causes incorrect memory pointer calculations, which can lead to an out-of-bounds heap write.
This can result in a denial of service (application crash) or allow arbitrary code execution.
How can this vulnerability impact me? :
Exploitation of this vulnerability can cause an application using the libtiff library to crash, resulting in denial of service.
More seriously, it could allow an attacker to execute arbitrary code on the affected system, potentially leading to unauthorized access or control.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know