Linux · 
Ubuntu · Package update · November 24, 2025
Ubuntu · Package update · November 24, 2025libpng16-16 1.6.34-1ubuntu0.18.04.2+esm1: libpng16-16 1.6.34-1ubuntu0.18.04.2+esm1 for Ubuntu 18.04.6 LTS (bionic)
libpng16-16 1.6.34-1ubuntu0.18.04.2+esm1, released November 24, 2025, fixes 4 CVEs in libpng16-16. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.
HighUnsupported product
CVEs closed
4
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0045
39th percentile
Priority of the 4 CVEs
Patch now 0
Urgent 0
High 2
Routine 2
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libpng16-16 | Ubuntu 18.04.6 LTS (bionic) | 1.6.34-1ubuntu0.18.04.2+esm1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-64720 | LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication | 7.5 | 0.0045 | None reported |
| High | CVE-2025-65018 | LIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` | 7.5 | 0.0028 | None reported |
| Routine | CVE-2025-64505 | LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette index | 6.1 | 0.0021 | None reported |
| Routine | CVE-2025-64506 | LIBPNG is vulnerable to a heap buffer over-read in `png_write_image_8bit` with grayscale+alpha or RGB/RGBA images | 6.1 | 0.0015 | None reported |
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