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CVE-2026-47192— Siemens kas 加密问题漏洞

一分钟漏洞结论

影响对象
siemens kas
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。

Siemens kas是德国Siemens公司的一款网络服务器设备。 Siemens kas 4.8版本至5.3之前版本存在加密问题漏洞,该漏洞源于在验证仓库签名之前检出并处理配置包含,可能导致攻击者替换签名验证密钥。

CVSS 2.1 · Low EPSS 0.25% · P15

影响版本矩阵 1

厂商产品 版本范围状态
siemens kas >= 4.8, < 5.3 affected
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一、 漏洞 CVE-2026-47192 基础信息

漏洞信息

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Vulnerability Title
kas's late signature validation may allow unnoticed repository manipulations
来源: CVE Program / CVE List V5
Vulnerability Description
kas is a setup tool for bitbake based projects. Starting in version 4.8 and prior to version 5.3, kas checks out and processes repositories regarding configuration includes prior to validating signatures of those repositories. This may allow to replace on original repository with one under the control of an attacker under very specific conditions. First of all, the attacker must have gained control of a repository that a kas file of the victim is referencing. Furthermore, the following conditions must be fulfilled: the victim's kas configuration must include a configuration file from the attacked repository; the repository state is referenced by tag, and no commit ID is specified (this is triggering a warning, though); the key used for validating the tag or commit signature is stored as file in a repository; no fingerprint for the key is specified; and the `_source_dir` key must not be set by the victim when calling kas (e.g. by avoiding a local `.config.yaml`). Given these conditions, the attacker could modify the included kas configuration in way that the key used to validate the tag signature of the attacker's repository could be replaced by an attacker-chosen key. No other exploit possibilities have been identified so far, but this does not rule out that those may exist. All patches have been released along with kas version 5.3. As a workaround, pin the expected signature key via its fingerprint, also when storing it as file in a repository.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
Siemens kas 加密问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Siemens kas是德国Siemens公司的一款网络服务器设备。 Siemens kas 4.8版本至5.3之前版本存在加密问题漏洞,该漏洞源于在验证仓库签名之前检出并处理配置包含,可能导致攻击者替换签名验证密钥。
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
siemens kas >= 4.8, < 5.3 -

二、漏洞 CVE-2026-47192 的公开POC

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三、漏洞 CVE-2026-47192 的情报信息

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CVE-2026-47192 补丁与修复 (2)

CVE-2026-47192 厂商安全公告 (3)

IV. Related Vulnerabilities

V. Comments for CVE-2026-47192

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