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CVE-2026-42012— GnuTLS 信任管理问题漏洞

CVSS 7.1 · High EPSS 0.35% · P28

影响版本矩阵 32

厂商产品版本范围状态
Red HatRed Hat Discovery 21782159791< *unaffected
1782166952< *unaffected
Red HatRed Hat Enterprise Linux 100:3.8.10-4.el10_2< *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:3.8.9-9.el10_0.19< *unaffected
Red HatRed Hat Enterprise Linux 6全部affected
Red HatRed Hat Enterprise Linux 7全部affected
Red HatRed Hat Enterprise Linux 80:3.6.16-8.el8_10.6< *unaffected
0:3.6.16-8.el8_10.6< *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:3.6.14-10.el8_4.1< *unaffected
0:4.13-3.el8_4.1< *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:3.6.14-10.el8_4.1< *unaffected
0:4.13-3.el8_4.1< *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:3.6.16-5.el8_6.5< *unaffected
0:4.13-3.el8_6.2< *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On0:3.6.16-5.el8_6.5< *unaffected
0:4.13-3.el8_6.2< *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:3.6.16-7.el8_8.4< *unaffected
0:4.13-4.el8_8.1< *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:3.6.16-7.el8_8.4< *unaffected
0:4.13-4.el8_8.1< *unaffected
Red HatRed Hat Enterprise Linux 90:3.8.10-4.el9_8< *unaffected
0:3.8.10-4.el9_8< *unaffected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:3.7.6-21.el9_2.7< *unaffected
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions0:3.8.3-4.el9_4.6< *unaffected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:3.8.3-6.el9_6.4< *unaffected
Red HatRed Hat Hardened Images3.8.13-1.hum1< *unaffected
Red HatRed Hat OpenShift Container Platform 4全部unknown
全部affected
Red HatRed Hat Update Infrastructure 51781525684< *unaffected
1781525671< *unaffected
1781525693< *unaffected
1781525739< *unaffected
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一、 漏洞 CVE-2026-42012 基础信息

漏洞信息
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Vulnerability Title
Gnutls: gnutls: certificate validation bypass due to improper handling of uri and srv sans
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
证书验证不恰当
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
GnuTLS 信任管理问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
GnuTLS是GnuTLS开源的一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS存在信任管理问题漏洞，该漏洞源于证书验证过程中，特制证书可能导致错误回退到检查通用名称字段，可能允许攻击者伪造合法服务或拦截敏感信息。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商产品影响版本CPE订阅
Red HatRed Hat Enterprise Linux 10 0:3.8.10-4.el10_2 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support 0:3.8.9-9.el10_0.19 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red HatRed Hat Enterprise Linux 8 0:3.6.16-8.el8_10.6 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red HatRed Hat Enterprise Linux 8 0:3.6.16-8.el8_10.6 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:3.6.14-10.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.13-3.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:3.6.14-10.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:4.13-3.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:3.6.16-5.el8_6.5 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.13-3.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:3.6.16-5.el8_6.5 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:4.13-3.el8_6.2 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service 0:3.6.16-7.el8_8.4 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.13-4.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:3.6.16-7.el8_8.4 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.13-4.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red HatRed Hat Enterprise Linux 9 0:3.8.10-4.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:3.8.10-4.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.7.6-21.el9_2.7 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:3.8.3-4.el9_4.6 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support 0:3.8.3-6.el9_6.4 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red HatRed Hat Discovery 2 1782159791 ~ * cpe:/a:redhat:discovery:2::el9
Red HatRed Hat Discovery 2 1782166952 ~ * cpe:/a:redhat:discovery:2::el9
Red HatRed Hat Hardened Images 3.8.13-1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red HatRed Hat Update Infrastructure 5 1781525684 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1781525671 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1781525693 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Update Infrastructure 5 1781525739 ~ * cpe:/a:redhat:rhui:5::el9
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

二、漏洞 CVE-2026-42012 的公开POC

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三、漏洞 CVE-2026-42012 的情报信息

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CVE-2026-42012 厂商安全公告 (12)

CVE-2026-42012 其他参考 (4)

同批安全公告 · Red Hat · 2026-05-26 · 共 7 条

CVE-2026-73749.9 CRITICALKubevirt 后置链接漏洞
CVE-2026-44809.0 CRITICALSamba 操作系统命令注入漏洞
CVE-2026-52608.2 HIGHGnuTLS 安全漏洞
CVE-2026-420138.2 HIGHGnuTLS 安全漏洞
CVE-2026-488647.8 HIGHlibsolv 安全漏洞
CVE-2026-420155.3 MEDIUMGnuTLS 安全漏洞

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-295

V. Comments for CVE-2026-42012

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