CVE-2021-43753 Adobe Lightroom TIF File Parsing Use-After-Free Information Disclosure Vulnerability
A use-after-free vulnerability in Adobe Lightroom allows privilege escalation via malicious TIF files, requiring user interaction to open the 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-2021-43753?
CVE-2021-43753 is a high-severity use after free vulnerability in Adobe Lightroom Desktop, published on 7 Sep 2023. 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
Adobe Lightroom versions 4.4 (and earlier) are affected by a use-after-free vulnerability in the processing of parsing TIF files that could result in privilege escalation. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Weakness: CWE-416
Which versions are affected by CVE-2021-43753?
It affects 1 product.
Products include Adobe Lightroom.
How do I fix CVE-2021-43753?
No fix has been published for CVE-2021-43753 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-43753 being exploited?
There is no known exploitation of CVE-2021-43753 in the wild and no public exploit code.
Other vulnerabilities in Adobe Lightroom Desktop
- CVE-2026-48397 Lightroom Classic | Deserialization of Untrusted Data (CWE-502)
- CVE-2026-48441 Lightroom Classic | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22)
- CVE-2026-47940 Lightroom Classic | Integer Overflow or Wraparound (CWE-190)
- CVE-2026-48404 Lightroom Classic | Out-of-bounds Write (CWE-787)
- CVE-2026-48405 Lightroom Classic | Out-of-bounds Write (CWE-787)
Sources
Also known as GHSA-8cm5-g2j6-fh65.