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CVE-2026-75818— Heap Buffer Overflow in GNU Aspell's prezip utility

Quick assessment

Affected
GNU Aspell
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.

GNU Aspell 的 prezip-bin 组件在 prog/prezip.c 中的解压器存在基于堆的缓冲区溢出漏洞。由于解压器未正确检查缓冲区空间，构造的压缩文件可能导致对堆空间的越界读写操作。攻击者若诱导用户使用 prezip-bin 处理恶意压缩文件，可触发内存损坏，从而导致进程崩溃。 此问题已在 commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f 中修复，该修复版本将在 0.60.8.3 中发布。

CVSS 1.8 · Low
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I. Basic Information for CVE-2026-75818

Vulnerability Information
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Vulnerability Title
Heap Buffer Overflow in GNU Aspell's prezip utility
Source: CVE Program / CVE List V5
Vulnerability Description
GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash. This issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNU Aspell 0 ~ 0.60.8.3 -

II. Public POCs for CVE-2026-75818

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III. Intelligence Information for CVE-2026-75818

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Other References for CVE-2026-75818 (2)

Same Patch Batch · GNU · 2026-10-06 · 3 CVEs total

CVE-2026-75820 1.8 LOW Integer Truncation Leading to Heap Corruption in GNU Aspell
CVE-2026-75819 1.8 LOW Out-of-bounds Read in GNU Aspell

IV. Related Vulnerabilities

Same product: Aspell
Same vendor: GNU
Same weakness: CWE-122

V. Comments for CVE-2026-75818

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