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CVE-2026-81334— darknet through 6.0 Out-of-Bounds Read and Write via Unchecked Layer Index in .cfg Parser

Quick assessment

Affected
hank-ai darknet
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.

Hank AI Darknet是Hank AI组织的一款深度学习神经网络框架。 Hank AI Darknet 6.0及之前版本存在缓冲区错误漏洞，该漏洞源于从配置文件获取的层索引未检查数组长度，导致越界读取和越界写入，攻击者通过特制配置文件可造成程序崩溃。

CVSS 6.1 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
hank-ai darknet ≤ 6.0 affected
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I. Basic Information for CVE-2026-81334

Vulnerability Information
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Vulnerability Title
darknet through 6.0 Out-of-Bounds Read and Write via Unchecked Layer Index in .cfg Parser
Source: CVE Program / CVE List V5
Vulnerability Description
darknet subscripts its layer array with an index taken from a configuration file without checking it against the array's length. The array is allocated in src-lib/darknet_network.cpp as xcalloc(net.n, sizeof(Darknet::Layer)), sized to exactly the number of layer sections the file declares. The shortcut, scale_channels and sam sections supply that index through their from field and the route section through its layers field, and parse_shortcut_section in src-lib/darknet_cfg.cpp reads net.layers[index].outputs with no bounds check, which reads past the allocation. The dispatch loop in create_network then reuses the same index to assign net.layers[l.index].use_bin_output and net.layers[l.index].keep_delta_gpu, writing past the allocation at an offset the file controls, with a fixed one-byte value. Parsing a crafted configuration file is sufficient: the parse runs before any weights file is opened and needs no non-default option, so the result is a reliable crash and a write whose location, though not its value, is chosen by whoever supplied the file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Hank AI Darknet 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hank AI Darknet是Hank AI组织的一款深度学习神经网络框架。 Hank AI Darknet 6.0及之前版本存在缓冲区错误漏洞，该漏洞源于从配置文件获取的层索引未检查数组长度，导致越界读取和越界写入，攻击者通过特制配置文件可造成程序崩溃。
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
hank-ai darknet 0 ~ 6.0 -

II. Public POCs for CVE-2026-81334

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III. Intelligence Information for CVE-2026-81334

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Vendor Advisories for CVE-2026-81334 (1)

IV. Related Vulnerabilities

Same product: darknet
Same vendor: hank-ai
Same weakness: CWE-125

V. Comments for CVE-2026-81334

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