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CVE-2026-12087— Socket versions before 2.041 for Perl have an out-of-bounds heap read

Quick assessment

Affected
PEVANS Socket
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.

PEVANS Socket是PEVANS个人开发者的一个消息队列中间件。 PEVANS Socket 2.041之前版本存在缓冲区错误漏洞，该漏洞源于对pack_ip_mreq_source()函数中source参数的长度检查错误，导致越界堆读取。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
PEVANS Socket < 2.041 affected
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I. Basic Information for CVE-2026-12087

Vulnerability Information
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Vulnerability Title
Socket versions before 2.041 for Perl have an out-of-bounds heap read
Source: CVE Program / CVE List V5
Vulnerability Description
Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
PEVANS Socket 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PEVANS Socket是PEVANS个人开发者的一个消息队列中间件。 PEVANS Socket 2.041之前版本存在缓冲区错误漏洞，该漏洞源于对pack_ip_mreq_source()函数中source参数的长度检查错误，导致越界堆读取。
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
PEVANS Socket 0 ~ 2.041 -

II. Public POCs for CVE-2026-12087

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III. Intelligence Information for CVE-2026-12087

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Patches & Fixes for CVE-2026-12087 (2)

IV. Related Vulnerabilities

Same product: Socket
Same vendor: PEVANS
Same weakness: CWE-125

V. Comments for CVE-2026-12087

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