CVE-2026-73071— Vim: Use-after-free in JSON Decoding
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-73071
Vulnerability Information
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Vulnerability Title
Vim: Use-after-free in JSON Decoding
Source: CVE Program / CVE List V5
Vulnerability Description
Vim is an open source, command line text editor. From 9.2.0511 until 9.2.0844, json_decode_item() in src/json.c can retain a stale pointer after json_decode_string() invokes channel_fill() to refill and free the current buffer, causing the error path to read freed memory instead of reader->js_buf + reader->js_used when an invalid JSON string spans buffers. This issue is fixed in version 9.2.0844.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Vim 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vim是Vim组织开源的一款高效的文本编辑器。 Vim 9.2.0511版本至9.2.0844之前版本存在资源管理错误漏洞，该漏洞源于src/json.c中的json_decode_item()函数在json_decode_string()调用channel_fill()重新填充并释放当前缓冲区后保留陈旧指针，导致错误路径读取已释放内存。Vim
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
II. Public POCs for CVE-2026-73071
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Patches & Fixes for CVE-2026-73071 (1)
Vendor Advisories for CVE-2026-73071 (1)
Other References for CVE-2026-73071 (1)
- 🔗 Release v9.2.0844 · vim/vim · GitHubx_refsource_MISC
Same Patch Batch · vim · 2026-08-11 · 8 CVEs total
| CVE-2026-73078 | 8.6 HIGH | Vim: Arbitrary Code Execution via Netrw Menu Construction |
| CVE-2026-73072 | 8.5 HIGH | Vim: Heap Buffer Overflow when Loading a Spell File |
| CVE-2026-73076 | 8.4 HIGH | Vim: Arbitrary Command Execution via Malicious `.VimballRecord` Entry Replay in `vimball.v |
| CVE-2026-73077 | 8.4 HIGH | Vim: Arbitrary Code Execution via Shell Keyword Lookup |
| CVE-2026-73074 | 7.1 HIGH | Vim: Heap Buffer Overflow in Text Property Handling |
| CVE-2026-73070 | 6.8 MEDIUM | Vim: Stack Buffer Overflow in the Vim Socket Server |
| CVE-2026-73075 | 4.6 MEDIUM | Vim: Out-of-bounds Access in Popup Opacity Handling |
IV. Related Vulnerabilities
Same product: vim
- CVE-2026-73078
Vim: Arbitrary Code Execution via Netrw Menu Construction - CVE-2026-73077
Vim: Arbitrary Code Execution via Shell Keyword Lookup - CVE-2026-73076
Vim: Arbitrary Command Execution via Malicious `.VimballReco - CVE-2026-73075
Vim: Out-of-bounds Access in Popup Opacity Handling - CVE-2026-73074
Vim: Heap Buffer Overflow in Text Property Handling
Same vendor: vim
- CVE-2026-73078
Vim: Arbitrary Code Execution via Netrw Menu Construction - CVE-2026-73077
Vim: Arbitrary Code Execution via Shell Keyword Lookup - CVE-2026-73076
Vim: Arbitrary Command Execution via Malicious `.VimballReco - CVE-2026-73075
Vim: Out-of-bounds Access in Popup Opacity Handling - CVE-2026-73074
Vim: Heap Buffer Overflow in Text Property Handling
Same weakness: CWE-416
- CVE-2026-12366
Use-after-free freeing an armed dynamically-allocated k_time - CVE-2026-12365
Use-after-free in Zephyr delayable work-queue cancellation u - CVE-2026-11937
Security vulnerabilities have been found in IBM Verify Ident - CVE-2026-19548
Binutils: binutils: multiple use-after-free in add_archive_e - CVE-2026-19560
Google Chrome 资源管理错误漏洞
V. Comments for CVE-2026-73071
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