CVE-2021-26236 Memory corruption in n/a
A stack-based buffer overflow in FastStone Image Viewer allows attackers to execute arbitrary code via a specially crafted CUR file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-26236?
CVE-2021-26236 is a high-severity memory corruption vulnerability in n/a, published on 18 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
FastStone Image Viewer v.<= 7.5 is affected by a Stack-based Buffer Overflow at 0x005BDF49, affecting the CUR file parsing functionality (BITMAPINFOHEADER Structure, 'BitCount' file format field), that will end up corrupting the Structure Exception Handler (SEH). Attackers could exploit this issue to achieve code execution when a user opens or views a malformed/specially crafted CUR file.
Weakness: CWE-787
Which versions are affected by CVE-2021-26236?
It affects 1 product.
Products include Faststone Image Viewer.
How do I fix CVE-2021-26236?
No fix has been published for CVE-2021-26236 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-26236 being exploited?
There is no known exploitation of CVE-2021-26236 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2022-36947 Memory corruption in n/a
- CVE-2007-1942 Integer overflow in n/a
- CVE-2024-9112 FastStone Image Viewer PSD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
- CVE-2024-9113 FastStone Image Viewer TGA File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
- CVE-2024-9114 FastStone Image Viewer GIF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Sources
Also known as GHSA-h82r-pj6q-vp4f.