CVE-2025-64720— LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-64720
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication
Source: NVD (National Vulnerability Database)
Vulnerability Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
libpng 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libpng是The PNG Development Group开源的一个可对PNG图形文件实现创建、读写等操作的PNG参考库。 libpng 1.6.0版本至1.6.51之前版本存在缓冲区错误漏洞，该漏洞源于png_image_read_composite函数处理调色板图像时存在越界读取，可能导致违反PNG API规范。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-64720
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | None | https://github.com/truediogo/CVE-2025-64720-PoC | POC Details |
| 2 | None | https://github.com/dantsco/CVE-2025-64720-PoC | POC Details |
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-64720
请登录查看更多情报信息。
Same Patch Batch · pnggroup · 2025-11-24 · 4 CVEs total
| CVE-2025-65018 | 7.1 HIGH | LIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_ima |
| CVE-2025-64506 | 6.1 MEDIUM | LIBPNG is vulnerable to a heap buffer over-read in `png_write_image_8bit` with grayscale+a |
| CVE-2025-64505 | 6.1 MEDIUM | LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette |
IV. Related Vulnerabilities
Same product: libpng
- CVE-2026-34757
LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS an - CVE-2026-33636
LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on - CVE-2026-33416
LIBPNG has use-after-free via pointer aliasing in `png_set_t - CVE-2026-3713
pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based over - CVE-2026-25646
LIBPNG has a heap buffer overflow in png_set_quantize
Same vendor: pnggroup
- CVE-2026-34757
LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS an - CVE-2026-33636
LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on - CVE-2026-33416
LIBPNG has use-after-free via pointer aliasing in `png_set_t - CVE-2026-3713
pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based over - CVE-2026-25646
LIBPNG has a heap buffer overflow in png_set_quantize
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2025-64720
No comments yet