A flaw was found in postgresql. A purpose-crafted query can read arbitrary bytes of server memory. In the default configuration, any authenticated database user can complete this attack at will. The attack does not require the ability to create objects. If server settings include max_worker_processes=0, the known versions of this attack are infeasible. However, undiscovered variants of the attack may be independent of that setting.
総合評価: CVE-2021-3677 は中リスク（51.4/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.43%、69 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.17% 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 | 0.25% | 1.43% | +1.17% |
| 2 | 2026-05-07 | 0.19% | 0.25% | +0.06% |
| 3 | 2025-11-21 | — | 0.19% | — |
EPSS の全履歴 （全 11 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 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 4.0 | 2.0 | MEDIUM |
|
8.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2021-3677: 5 source package rows (postgresql, postgresql12, postgresql13, postgresql14, postgresql15); 32 state rows across 12 repos (3.11-main, 3.12-main, 3.17-community, 3.17-main, 3.18-community, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, edge-community, edge-main); fixed 23, open 9. | https://security.alpinelinux.org/vuln/CVE-2021-3677 |
debian
|
not yet assigned | CVE-2021-3677 not yet assigned priority: Debian including 1 source packages (postgresql-13), 1 status rows across 1 suites (bullseye): resolved 1. | https://security-tracker.debian.org/tracker/CVE-2021-3677 |
gentoo
|
high | CVE-2021-3677: 1 GLSA(s) (202211-04), 1 atom(s) (dev-db/postgresql); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-3677 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-3677 |
suse
|
medium | CVE-2021-3677 severity moderate: SUSE including 405 source package names (10.19:libpq5-13.4-5.16.2, 12-5.1:libpq5-13.4-5.16.2, …), 1190 product×package rows across 91 product lines (Container suse/postgres, Container trento/trento-db, … (91 product lines)): Known Not Affected 544, Fixed 415, Known Affected 231. | https://www.suse.com/security/cve/CVE-2021-3677/ |
ubuntu
|
medium | CVE-2021-3677 medium priority: Ubuntu including 6 source packages (postgresql-10, postgresql-12, postgresql-13, postgresql-9.1, postgresql-9.3, postgresql-9.5), 48 status rows across 8 suites (bionic, focal, hirsute, impish, jammy, trusty, upstream, xenial): DNE 36, not-affected 7, released 5. | https://ubuntu.com/security/CVE-2021-3677 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| postgresql | postgresql | >= 11.0, < 11.13 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 12.0, < 12.8 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 13.0, < 13.4 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| redhat | virtualization | 4.0 | cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* |
| redhat | software_collections | 1.0 | cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2001857 | Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/202211-04 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20220407-0008/ | Third Party Advisory |
| https://www.postgresql.org/support/security/CVE-2021-3677/ | Vendor Advisory |