Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem cannot be mitigated by denying ICP queries using `icp_access` rules. Version 7.5 contains a patch.
総合評価: CVE-2026-33515 は中リスク(48.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 1.04%、60 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 | 1.24% | 1.04% | -0.20% |
| 2 | 2026-06-15 | 0.04% | 1.24% | +1.20% |
| 3 | 2026-05-22 | — | 0.04% | — |
EPSS の全履歴 (全 7 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 |
|---|---|---|---|---|---|---|
| 6.9 | 4.0 | MEDIUM |
|
— | — | [email protected] |
| 6.5 | 3.1 | MEDIUM |
|
3.9 | 2.5 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-33515: 1 source package rows (squid); 78 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 0, open 78. | https://security.alpinelinux.org/vuln/CVE-2026-33515 |
debian
|
not yet assigned | CVE-2026-33515 not yet assigned priority: Debian including 1 source packages (squid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. | https://security-tracker.debian.org/tracker/CVE-2026-33515 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-33515 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-33515/ |
ubuntu
|
medium | CVE-2026-33515 medium priority: Ubuntu including 2 source packages (squid, squid3), 11 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): needs-triage 5, DNE 3, released 3. | https://ubuntu.com/security/CVE-2026-33515 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| squid-cache | squid | < 7.5 | cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165 | Patch |
| https://github.com/squid-cache/squid/pull/2220 | Issue Tracking |
| https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637 | Issue Tracking |
| https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/03/25/4 | Mailing List Third Party Advisory |