In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.
総合評価: CVE-2021-28877 は中リスク(55.2/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 1.40%、69 パーセンタイル) 根拠: 直近 1 日で EPSS が +1.13% 上昇。悪用への関心が高まっている可能性があります。 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 | 0.27% | 1.40% | +1.13% |
| 2 | 2026-01-05 | 0.50% | 0.27% | -0.22% |
| 3 | 2025-11-21 | — | 0.50% | — |
EPSS の全履歴 (全 13 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2021-28877: 1 source package rows (rust); 12 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-community, edge-main); fixed 0, open 12. | https://security.alpinelinux.org/vuln/CVE-2021-28877 |
debian
|
not yet assigned | CVE-2021-28877 not yet assigned priority: Debian including 1 source packages (rustc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2021-28877 |
gentoo
|
normal | CVE-2021-28877: 1 GLSA(s) (202210-09), 2 atom(s) (dev-lang/rust, dev-lang/rust-bin); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-28877 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-28877 |
suse
|
high | CVE-2021-28877 severity important: SUSE including 46 source package names (cargo, cargo-1.52.1-1.module+el8.4.0+11282+0729bac9, …), 151 product×package rows across 23 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (23 product lines)): Known Not Affected 137, Fixed 14. | https://www.suse.com/security/cve/CVE-2021-28877/ |
ubuntu
|
medium | CVE-2021-28877 medium priority: Ubuntu including 1 source packages (rustc), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 5, ignored 4, DNE 3, needed 2, released 2. | https://ubuntu.com/security/CVE-2021-28877 |
| URL | タグ |
|---|---|
| https://github.com/rust-lang/rust/pull/80670 | Issue Tracking Patch Third Party Advisory |
| https://security.gentoo.org/glsa/202210-09 | Third Party Advisory |