Linux · 
Ubuntu · Package update · April 9, 2026
Ubuntu · Package update · April 9, 2026libpng-tools 1.6.50-1ubuntu0.5: libpng-tools 1.6.50-1ubuntu0.5 for Ubuntu 25.10 (questing)
libpng-tools 1.6.50-1ubuntu0.5, released April 9, 2026, fixes 3 CVEs in libpng-tools. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.
HighUnsupported product
CVEs closed
3
None rated Critical
Exploited
0
None reported
Highest CVSS
8.8
Base score, 0 to 10
Highest EPSS
0.0109
65th percentile
Priority of the 3 CVEs
Patch now 0
Urgent 0
High 2
Routine 1
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libpng-tools | Ubuntu 25.10 (questing) | 1.6.50-1ubuntu0.5 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-33416 | LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE` | 8.8 | 0.0109 | None reported |
| High | CVE-2026-33636 | LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64 | 8.8 | 0.0077 | None reported |
| Routine | CVE-2026-34757 | LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS and png_set_hIST leading to corrupted chunk data and potential heap information disclosure | 5.1 | 0.0020 | None reported |
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