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CVE-2026-81575— Missing Sanity Checks for Buffer Lengths

Quick assessment

Affected

wibu-systems-ag codemeter-runtime

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.

WIBU-SYSTEMS CodeMeter Runtime是德国WIBU-SYSTEMS公司的一款软件加密与授权管理运行时组件。 WIBU-SYSTEMS CodeMeter Runtime 8.41a之前版本和9.10之前版本存在输入验证错误漏洞，该漏洞源于对opcode 0x5e请求中的数据长度值缺少边界检查，可能导致越界读取，造成段错误，最终崩溃。

CVSS 7.5 · High EPSS 0.46% · P40 Updated Aug 28, 2026

Possible ATT&CK Techniques 1 AI

T1213 · Data from Information Repositories

Affected Version Matrix 4

Vendor	Product	Version Range	Status
wibu-systems-ag	codemeter-runtime	`9.00< 9.10`	affected
		`8.00< 8.41a`	affected
		`7.00`	unaffected
		`6.00`	unaffected

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I. Basic Information for CVE-2026-81575

Vulnerability Information

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Vulnerability Title

Missing Sanity Checks for Buffer Lengths

Source: CVE Program / CVE List V5

Vulnerability Description

If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 accepts requests with opcode 0x5e, which contain the data length and the data itself. Missing bounds checking on the data length value can lead to out of bounds reads, causing a segmentation fault that ultimately crashes the CodeMeter Runtime.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

长度参数不一致性处理不恰当

Source: CVE Program / CVE List V5

Vulnerability Title

WIBU-SYSTEMS CodeMeter Runtime 输入验证错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

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
wibu-systems-ag	codemeter-runtime	9.00 ~ 9.10	-

II. Public POCs for CVE-2026-81575

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-81575

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Vendor Advisories for CVE-2026-81575 (1)

🔗 https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-81575

Same Patch Batch · wibu-systems-ag · 2026-08-27 · 7 CVEs total

CVE-2026-81581	8.8 HIGH	User input in WibuKey is used (without proper sanitization) to compute the address of a po
CVE-2026-81579	8.8 HIGH	An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivilege
CVE-2026-81573	8.6 HIGH	Improper Access Control in Local-Only Configuration Commands
CVE-2026-81574	8.2 HIGH	Format String Vulnerability in Logger
CVE-2026-81572	7.8 HIGH	Local Privilege Escalation in CodeMeter Runtime on Windows
CVE-2026-81576	7.7 HIGH	Improper Authentication of Session Handles

IV. Related Vulnerabilities

Same product: codemeter-runtime

Same vendor: wibu-systems-ag

Same weakness: CWE-130