Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service
CVSS Skor
4.3
EPSS İhtimal
%0.7
Risk Skoru
0.0
Yayın
3 ay önce
Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.
Envanterimdeki Etkisi
Yalnızca hesabınıza eklediğiniz kişisel ürünler değerlendirilir; kurumsal envanter burada görünmez.
Oturum kontrol ediliyor…
Zafiyet Açıklaması
DayBreach CVE AI Araştırması
CVE-2026-55653 için toplanan üretici, dağıtım, yama ve güvenlik kaynağı kayıtlarını karşılaştırıp kanıt bağlantılı bir açıklama hazırlayalım.
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
IMPACT — Etkilenen Ürünler ve Yazılımlar
Affected Products
The following products are affected by CVE-2026-55653 vulnerability. Even if our threat engine is aware of the exact versions of the products that are affected, the information is represented below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | Red Hat Enterprise Linux 10 | İncele |
| 2 | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | İncele |
| 3 | Red Hat | Red Hat Enterprise Linux 8 | İncele |
| 4 | Red Hat | Red Hat Enterprise Linux 9 | İncele |
| 5 | Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | İncele |
| 6 | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | İncele |
| 7 | Red Hat | Red Hat Hardened Images | İncele |
| 8 | Red Hat | Red Hat OpenShift AI 3.0 | İncele |
| 9 | Red Hat | Red Hat OpenShift AI 3.0 | İncele |
| 10 | Red Hat | Red Hat OpenShift AI 3.0 | İncele |
| 11 | Red Hat | Red Hat OpenShift AI 3.0 | İncele |
| 12 | Red Hat | Red Hat OpenShift AI 3.0 | İncele |
| 13 | Red Hat | Red Hat OpenShift AI 3.2 | İncele |
| 14 | Red Hat | Red Hat OpenShift AI 3.2 | İncele |
| 15 | Red Hat | Red Hat OpenShift AI 3.2 | İncele |
| 16 | Red Hat | Red Hat OpenShift AI 3.2 | İncele |
| 17 | Red Hat | Red Hat OpenShift AI 3.2 | İncele |
| 18 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 19 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 20 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 21 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 22 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 23 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 24 | Red Hat | Red Hat OpenShift AI 3.3 | İncele |
| 25 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 26 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 27 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 28 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 29 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 30 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 31 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 32 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 33 | Red Hat | Red Hat OpenShift AI 3.4 | İncele |
| 34 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 35 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 36 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 37 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 38 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 39 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 40 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 41 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 42 | Red Hat | Red Hat OpenShift AI 3.5 | İncele |
| 43 | Red Hat | Red Hat Update Infrastructure 5 | İncele |
| 44 | Red Hat | Red Hat Update Infrastructure 5 | İncele |
| 45 | Red Hat | Red Hat Update Infrastructure 5 | İncele |
| 46 | Red Hat | Red Hat Update Infrastructure 5 | İncele |
| 47 | Red Hat | Red Hat Enterprise Linux 6 | İncele |
| 48 | Red Hat | Red Hat Enterprise Linux 7 | İncele |
| 49 | Red Hat | Red Hat OpenShift Container Platform 4 | İncele |
| 50 | openbsd | openssh | İncele |
| 51 | redhat | hardened images | İncele |
| 52 | redhat | openshift container platform | İncele |
| 53 | redhat | enterprise linux | İncele |
| 54 | redhat | enterprise linux | İncele |
| 55 | redhat | enterprise linux | İncele |
| 56 | redhat | enterprise linux | İncele |
| 57 | redhat | enterprise linux | İncele |
RED HAT CSAF/VEX — Ürün Etki Kontrolü
SCORING — CVSS Çoklu Kaynak Skoru
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from various sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | NVD |
| 4.3 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | NVD |
| 4.3 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | CVE CNA |
| 4.3 | CVSS 3.x | — | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | Microsoft MSRC |
Yama ve İyileştirme Rehberi (Solution)
Solution & Remediation Advisory
1 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.
Public exploit ve aktif sömürü durumu
Doğrulanmış exploit istihbaratı
Bu CVE için henüz doğrulanmış public PoC, exploit repository’si veya Metasploit modülü bulunamadı.
Zafiyet Dağılımı ve Saldırı Kalıpları (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-55653 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-55653 weaknesses.
Saldırı Vektörü ve Erişilebilirlik Karakteristiği
Resmi Kaynaklar ve Danışma Bültenleri
İlgili Benzer Açıklar
Bu açığı API ile alın
Etkilenen ürünler, sürüm aralıkları, istismar durumu ve yama bilgisi tek istekte; ücretsiz anahtarla.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-55653"