GHSA-gxhg-7jx8-m22j · 深刻度： medium — Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger...
Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application. Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service. An attacker controlling a CMP server (or acting as a man-in-the-middle) could craft a CMP response containing a CRMF (Certificate Request Message Format) CertRepMessage with an EncryptedValue structure where the symmAlg field has an algorithm OID but no parameters field. When the OpenSSL CMP client processes this response, the NULL dereference occurs, causing a crash of the CMP client. Applications that process untrusted CMP/CRMF messages may be affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.
総合評価: CVE-2026-42767 は低リスク（33/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.34%、26 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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 | 0.06% | 0.34% | +0.29% |
| 2 | 2026-06-10 | — | 0.06% | — |
EPSS の全履歴 （全 2 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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-gxhg-7jx8-m22j · 深刻度： medium — Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-42767 unimportant priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-42767 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2026-42767 |
suse
|
medium | CVE-2026-42767 severity moderate: SUSE including 36 source package names (compat-openssl098, libopenssl-1_0_0-devel, …), 239 product×package rows across 35 product lines (SUSE Liberty Linux 10, SUSE Liberty Linux 9, … (35 product lines)): Known Not Affected 231, Fixed 8. | https://www.suse.com/security/cve/CVE-2026-42767/ |
ubuntu
|
low | CVE-2026-42767 low priority: Ubuntu including 5 source packages (edk2, nodejs, openssl, openssl-fips, openssl1.0), 35 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): not-affected 14, DNE 8, needs-triage 8, released 4, needed 1. | https://ubuntu.com/security/CVE-2026-42767 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| openssl | openssl | >= 3.0.0, < 3.0.21 | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | >= 3.4.0, < 3.4.6 | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | >= 3.5.0, < 3.5.7 | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | >= 3.6.0, < 3.6.3 | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | 4.0.0 | cpe:2.3:a:openssl:openssl:4.0.0:-:*:*:*:*:*:* |