LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.
総合評価: CVE-2026-22801 は低リスク(27.9/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.11%、2 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.01% | 0.11% | +0.10% |
| 2 | 2026-01-13 | — | 0.01% | — |
EPSS の全履歴 (全 2 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.8 | 3.1 | MEDIUM |
|
2.5 | 4.2 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-22801: 1 source package rows (libpng); 28 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 5, open 23. | https://security.alpinelinux.org/vuln/CVE-2026-22801 |
debian
|
not yet assigned | CVE-2026-22801 not yet assigned priority: Debian including 1 source packages (libpng1.6), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-22801 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-22801 |
suse
|
medium | CVE-2026-22801 severity moderate: SUSE including 323 source package names (1.1.0-1.11:libpng16-16-1.6.40-150600.3.6.1, 2.0.4-5.8.242:libpng16-16-1.6.34-150000.3.19.1, …), 758 product×package rows across 234 product lines (Container private-registry/harbor-portal, Container suse/manager/5.0/x86_64/server, … (234 product lines)): Fixed 439, Known Affected 231, Known Not Affected 81, First Fixed 7. | https://www.suse.com/security/cve/CVE-2026-22801/ |
ubuntu
|
medium | CVE-2026-22801 medium priority: Ubuntu including 5 source packages (chromium-browser, firefox, libpng, libpng1.6, thunderbird), 30 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): not-affected 14, released 8, DNE 7, ignored 1. | https://ubuntu.com/security/CVE-2026-22801 |
| URL | タグ |
|---|---|
| https://github.com/pnggroup/libpng/security/advisories/GHSA-vgjq-8cw5-ggw8 | Third Party Advisory |