GHSA-cm99-m826-vgg7 · 深刻度： high — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer...
A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.
総合評価: CVE-2026-4775 は中リスク（46.1/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.55%、42 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 2026-06-23 | 0.33% | 0.55% | +0.22% |
| 2 | 2026-06-15 | 0.04% | 0.33% | +0.29% |
| 3 | 2026-05-20 | — | 0.04% | — |
EPSS の全履歴 （全 6 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
GHSA-cm99-m826-vgg7 · 深刻度： high — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-4775 not yet assigned priority: Debian including 1 source packages (tiff), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-4775 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-4775 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-4775/ |
ubuntu
|
medium | CVE-2026-4775 medium priority: Ubuntu including 5 source packages (gdal, neuron, qtwebengine-opensource-src, texmaker, tiff), 35 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needs-triage 27, not-affected 8. | https://ubuntu.com/security/CVE-2026-4775 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| libtiff | libtiff | — | cpe:2.3:a:libtiff:libtiff:-:*:*:*:*:*:*:* |
| redhat | hardened_images | — | cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:* |
| debian | debian_linux | 11.0 | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 6.0 | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 10.0 | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |