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CVE-2026-64193— Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR

Quick assessment

Affected
NLNETLABS Net::DNS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nlnetlabs Net::DNS是荷兰Nlnetlabs组织的一个域名系统解析库组件。 Nlnetlabs Net::DNS 1.55及之前版本存在代码注入漏洞，该漏洞源于在解析EDNS EXTENDED-ERROR选项的EXTRA-TEXT字段时，通过标记原始字节并将结果传递给Perl eval，对$和@进行了转义，但未对反引号进行转义，可能导致远程执行命令。

AI Predicted 8.6 Difficulty: Easy EPSS 1.44% · P73

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
NLNETLABS Net::DNS ≤ 1.55 affected
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I. Basic Information for CVE-2026-64193

Vulnerability Information
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Vulnerability Title
Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR
Source: CVE Program / CVE List V5
Vulnerability Description
Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR. Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl's eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt->edns->option('EXTENDED-ERROR') is called in array context, for example with a payload of {0:`"<command>"`} in EXTRA-TEXT.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Nlnetlabs Net::DNS 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nlnetlabs Net::DNS是荷兰Nlnetlabs组织的一个域名系统解析库组件。 Nlnetlabs Net::DNS 1.55及之前版本存在代码注入漏洞，该漏洞源于在解析EDNS EXTENDED-ERROR选项的EXTRA-TEXT字段时，通过标记原始字节并将结果传递给Perl eval，对$和@进行了转义，但未对反引号进行转义，可能导致远程执行命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NLNETLABS Net::DNS 0 ~ 1.55 -

II. Public POCs for CVE-2026-64193

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III. Intelligence Information for CVE-2026-64193

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Other References for CVE-2026-64193 (1)

IV. Related Vulnerabilities

Same product: Net::DNS
Same vendor: NLNETLABS
Same weakness: CWE-95