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CVE-2026-76882— Out-of-bounds Read in Wireshark

Quick assessment

Affected
Wireshark Foundation Wireshark
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.

Wireshark是Wireshark组织开源的一款网络协议分析工具。 Wireshark 4.6.0版本至4.6.7版本和4.4.0版本至4.4.18版本存在缓冲区错误漏洞，该漏洞源于蓝牙属性协议解析器存在越界读取问题，可能导致拒绝服务攻击。

CVSS 4.7 · Medium EPSS 0.10% · P1

Affected Version Matrix 2

VendorProduct Version RangeStatus
Wireshark Foundation Wireshark 4.6.0< 4.6.8 affected
4.4.0< 4.4.18 affected
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I. Basic Information for CVE-2026-76882

Vulnerability Information
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Vulnerability Title
Out-of-bounds Read in Wireshark
Source: CVE Program / CVE List V5
Vulnerability Description
Bluetooth Attribute Protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Wireshark 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wireshark是Wireshark组织开源的一款网络协议分析工具。 Wireshark 4.6.0版本至4.6.7版本和4.4.0版本至4.4.18版本存在缓冲区错误漏洞，该漏洞源于蓝牙属性协议解析器存在越界读取问题，可能导致拒绝服务攻击。
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
Wireshark Foundation Wireshark 4.6.0 ~ 4.6.8 -

II. Public POCs for CVE-2026-76882

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III. Intelligence Information for CVE-2026-76882

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Patches & Fixes for CVE-2026-76882 (1)

Vendor Advisories for CVE-2026-76882 (1)

Same Patch Batch · Wireshark Foundation · 2026-08-19 · 25 CVEs total

CVE-2026-76886 8.1 HIGH Heap-based Buffer Overflow in Wireshark
CVE-2026-76928 7.5 HIGH NULL Pointer Dereference in Wireshark
CVE-2026-76879 7.5 HIGH Stack-based Buffer Overflow in Wireshark
CVE-2026-76880 7.5 HIGH Out-of-bounds Write in Wireshark
CVE-2026-76924 5.5 MEDIUM Out-of-bounds Read in Wireshark
CVE-2026-76918 5.5 MEDIUM Heap-based Buffer Overflow in Wireshark
CVE-2026-76917 5.5 MEDIUM Heap-based Buffer Overflow in Wireshark
CVE-2026-76923 5.5 MEDIUM Out-of-bounds Read in Wireshark
CVE-2026-76922 5.5 MEDIUM NULL Pointer Dereference in Wireshark
CVE-2026-76921 5.5 MEDIUM Use After Free in Wireshark
CVE-2026-76919 5.3 MEDIUM Use of Uninitialized Variable in Wireshark
CVE-2026-76929 4.7 MEDIUM Out-of-bounds Read in Wireshark
CVE-2026-76927 4.7 MEDIUM NULL Pointer Dereference in Wireshark
CVE-2026-76920 4.7 MEDIUM Out-of-bounds Write in Wireshark
CVE-2026-76883 4.7 MEDIUM Heap-based Buffer Overflow in Wireshark
CVE-2026-76889 4.7 MEDIUM Heap-based Buffer Overflow in Wireshark
CVE-2026-76881 4.7 MEDIUM NULL Pointer Dereference in Wireshark
CVE-2026-76891 3.1 LOW Expired Pointer Dereference in Wireshark
CVE-2026-76885 3.1 LOW Buffer Over-read in Wireshark
CVE-2026-76884 3.1 LOW Buffer Over-read in Wireshark

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Wireshark
Same vendor: Wireshark Foundation
Same weakness: CWE-125

V. Comments for CVE-2026-76882

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