Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, leading to memory exhaustion and the process getting killed. While reported for DCERPC over UDP, it is believed that DCERPC over TCP and SMB are also vulnerable. DCERPC/TCP in the default configuration should not be vulnerable as the default stream depth is limited to 1MiB. Versions 8.0.3 and 7.0.14 contain a patch. Some workarounds are available. For DCERPC/UDP, disable the parser. For DCERPC/TCP, the `stream.reassembly.depth` setting will limit the amount of data that can be buffered. For DCERPC/SMB, the `stream.reassembly.depth` can be used as well, but is set to unlimited by default. Imposing a limit here may lead to loss of visibility in SMB.
総合評価: CVE-2026-22258 は中リスク（43.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.48%、38 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 | 0.04% | 0.48% | +0.44% |
| 2 | 2026-06-12 | 0.05% | 0.04% | -0.01% |
| 3 | 2026-02-28 | — | 0.05% | — |
EPSS の全履歴 （全 4 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] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-22258: 1 source package rows (suricata); 10 state rows across 2 repos (3.23-community, edge-community); fixed 0, open 10. | https://security.alpinelinux.org/vuln/CVE-2026-22258 |
debian
|
not yet assigned | CVE-2026-22258 not yet assigned priority: Debian including 1 source packages (suricata), 4 status rows across 4 suites (bullseye, forky, sid, trixie): resolved 3, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-22258 |
ubuntu
|
medium | CVE-2026-22258 medium priority: Ubuntu including 1 source packages (suricata), 6 status rows across 6 suites (bionic, jammy, noble, questing, upstream, xenial): needs-triage 5, released 1. | https://ubuntu.com/security/CVE-2026-22258 |
| URL | タグ |
|---|---|
| https://github.com/OISF/suricata/commit/39d8c302af3422a096b75474a4f295a754ec6a74 | Patch |
| https://github.com/OISF/suricata/commit/f82a388d0283725cb76782cf64e8341cab370830 | Patch |
| https://github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcx | Patch Vendor Advisory |
| https://redmine.openinfosecfoundation.org/issues/8182 | Issue Tracking Permissions Required |