CVE-2026-14457— RPK 服务器签名算法选择可导致引用缺失证书的漏洞
一分钟漏洞结论
影响对象
OpenSSL OpenSSL
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
问题摘要：在启用了 RFC7250 原始公钥（Raw Public Keys, RPKs）的服务器或客户端配置中，如果本地仅配置了私钥（而未配置关联的证书），当远程对等方请求使用原始公钥，并同时发送通常会被省略的 "signature_algorithms_cert" TLS 扩展时，可能发生空指针解引用漏洞。 影响摘要：该漏洞的影响仅限于可能导致的应用程序中止从而引发的拒绝服务（DoS）攻击；不可能发生数据泄露或远程命令执行。 CWE：CWE-476：空指针解引用 描述：文档中的示例代码中有一段注释表明，仅使用密
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一、 漏洞 CVE-2026-14457 基础信息
漏洞信息
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Vulnerability Title
RPK Server Signature Algorithm Selection Can Dereference a Missing Certificate
来源: CVE Program / CVE List V5
Vulnerability Description
Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs)
enabled, and only the private key (with no associated certificate) configured locally,
a NULL pointer dereference may occur when the remote peer solicits raw public keys and
also sends the typically omitted "signature_algorithms_cert" TLS extension.
Impact summary: The impact is limited to a possible Denial of Service as a result of
an application abort, no data disclosure or remote command execution are possible.
CWE: CWE-476: NULL Pointer Dereference
Description: While a passing comment in sample code in the documentation suggests
that key-only RPK configurations are supported, the best-practice RPK configuration
is to always configure a corresponding certificate (possibly self-signed or
signed by any convenient CA).
When the private key is configured along with a matching certificate, the
"signature_algorithms_cert" extension is handled reliably even without the
fix, and peer clients or servers that don't support raw public keys may be
able to complete a TLS connection by pinning or verifying the corresponding
certificate or its public key.
Deployments that prefer to configure just a private key with no certificate
need to upgrade to an updated release as noted below.
FIPS impact: no
No FIPS modules are affected by this issue, as the SSL protocol implementation
is outside the OpenSSL FIPS module boundary.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-14457 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-14457 补丁与修复 (4)
CVE-2026-14457 厂商安全公告 (1)
同批安全公告 · OpenSSL · 2026-08-25 · 共 9 条
| CVE-2026-75803 | EVP_Cipher()使用AEAD时空密文伪造漏洞 | |
| CVE-2026-18798 | QUIC Server 处理初始包时可能触发双重释放漏洞 | |
| CVE-2026-54874 | DTLS记录缓冲区过度内存使用漏洞 | |
| CVE-2026-63074 | ExtraCerts 无限缓存增长漏洞 | |
| CVE-2026-63072 | CMS 密钥解封装中的堆缓冲区溢出漏洞 | |
| CVE-2026-63073 | CMP响应验证中未信任的发送者DN被用作格式字符串漏洞 | |
| CVE-2026-63075 | QUIC ACK包保留可导致内存耗尽 | |
| CVE-2026-63076 | CMP Server 保护算法构造指针解引用漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-14457
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