CVE-2018-14550 Out-of-bounds write in libpng
A stack-based buffer overflow in libpng's PNM decoder allows attackers to execute arbitrary code or cause denial of service via crafted images.
- 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-2018-14550?
CVE-2018-14550 is a high-severity memory corruption vulnerability in Libpng Libpng, published on 10 Jul 2019. 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 third-party PNM decoding associated with libpng 1.6.35. It is a stack-based buffer overflow in the function get_token in pnm2png.c in pnm2png.
Weakness: CWE-787
Which versions are affected by CVE-2018-14550?
2 open source packages ship an affected version, including libpng. It affects 5 products.
| Package | Affected | Fixed in |
|---|---|---|
libpng NuGet | All versions | 1.6.37 |
libpng NuGet | All versions | 1.6.37 |
Products include Libpng Libpng, Netapp Active Iq Unified Manager, Netapp Oncommand Api Services, Oracle Hyperion Infrastructure Technology, Oracle Mysql Workbench.
How do I fix CVE-2018-14550?
Upgrade libpng to 1.6.37 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-14550 being exploited?
There is no known exploitation of CVE-2018-14550 in the wild and no public exploit code.
Other vulnerabilities in Libpng Libpng
- CVE-2017-12652 Denial of service in n/a
- 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`
- CVE-2016-10087 Null dereference in n/a
Sources
Also known as ALPINE-CVE-2018-14550, AZL-44014, AZL-45027, CLEANSTART-2026-SS35621, DEBIAN-CVE-2018-14550, GHSA-qwwr-qc2p-6283.