GHSA-vc8w-w49c-4jgj · 深刻度： medium — Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response...
Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.
総合評価: CVE-2026-35188 は低リスク（24.5/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.22%、13 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 | 0.07% | 0.22% | +0.15% |
| 2 | 2026-06-11 | 0.02% | 0.07% | +0.05% |
| 3 | 2026-06-10 | — | 0.02% | — |
EPSS の全履歴 （全 3 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 |
|---|---|---|---|---|---|---|
| 5.0 | 3.1 | MEDIUM |
|
1.6 | 3.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-vc8w-w49c-4jgj · 深刻度： medium — Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-35188 unimportant priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-35188 |
ubuntu
|
medium | CVE-2026-35188 medium 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 23, DNE 6, needs-triage 5, needed 1. | https://ubuntu.com/security/CVE-2026-35188 |