An issue was discovered in split_region in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the virtual memory manager. The issue results from the faulty comparison of GVA and GPA while calling uc_mem_map_ptr to free part of a claimed memory block. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code on the host machine.
総合評価: CVE-2021-44078 は中リスク(46.9/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.53%、40 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 | 2026-06-15 | 0.08% | 0.53% | +0.45% |
| 2 | 2026-04-15 | 0.23% | 0.08% | -0.16% |
| 3 | 2025-11-21 | — | 0.23% | — |
EPSS の全履歴 (全 12 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 |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
1.4 | 6.0 | [email protected] |
| 6.9 | 2.0 | MEDIUM |
|
3.4 | 10.0 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| unicorn-engine | unicorn_engine | <= 1.0.3 | cpe:2.3:a:unicorn-engine:unicorn_engine:*:*:*:*:*:*:*:* |
| unicorn-engine | unicorn_engine | 2.0.0 | cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc1:*:*:*:*:*:* |
| unicorn-engine | unicorn_engine | 2.0.0 | cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc2:*:*:*:*:*:* |
| unicorn-engine | unicorn_engine | 2.0.0 | cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc3:*:*:*:*:*:* |
| unicorn-engine | unicorn_engine | 2.0.0 | cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc4:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://gist.github.com/jwang-a/cb4b6e9551457aa299066076b836a2cd | Third Party Advisory |
| https://github.com/jwang-a/CTF/blob/master/MyChallenges/Pwn/Unicorns_Aisle/UnicornsAisle.pdf | Third Party Advisory |
| https://github.com/unicorn-engine/unicorn/commit/c733bbada356b0373fa8aa72c044574bb855fd24 | Patch Third Party Advisory |
| https://github.com/unicorn-engine/unicorn/compare/2.0.0-rc4...2.0.0-rc5 | Patch Third Party Advisory |
| https://www.unicorn-engine.org/changelog/ | Vendor Advisory |