CVE-2018-14048 Null dereference in n/a
A null pointer dereference in libpng allows attackers to cause a denial of service via crafted image files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-14048?
CVE-2018-14048 is a medium-severity vulnerability in Libpng Libpng, published on 13 Jul 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue has been found in libpng 1.6.34. It is a SEGV in the function png_free_data in png.c, related to the recommended error handling for png_read_image.
Which versions are affected by CVE-2018-14048?
It affects 3 products.
Products include Libpng Libpng, Oracle Jdk, Oracle Jre.
How do I fix CVE-2018-14048?
Upgrade to a fixed version.
Is CVE-2018-14048 being exploited?
There is no known exploitation of CVE-2018-14048 in the wild and no public exploit code.
Other vulnerabilities in Libpng Libpng
- CVE-2017-12652 Denial of service in n/a
- CVE-2018-14550 Out-of-bounds write in libpng
- CVE-2026-25646 LIBPNG has a heap buffer overflow in png_set_quantize
- CVE-2026-33636 LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64
- CVE-2026-33416 LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`
Sources
Also known as ALPINE-CVE-2018-14048, CLEANSTART-2026-FT25172, DEBIAN-CVE-2018-14048, GHSA-64xj-5wfx-5pjg, UBUNTU-CVE-2018-14048.