Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-53910— Heap-based Buffer Overflow in GNU diffutils

Quick assessment

Affected
GNU diffutils
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 diffutils是美国GNU基金会开源的一套用于比较和合并文本文件的工具集。 GNU diffutils 3.12及之前版本存在数字错误漏洞，该漏洞源于行映射计算中存在多个有符号整数溢出，导致堆缓冲区溢出，可能造成攻击者通过控制diff程序输出触发越界写入，导致崩溃或远程代码执行。

CVSS 2.1 · Low EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
GNU diffutils ≤ 3.12 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-53910

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Heap-based Buffer Overflow in GNU diffutils
Source: CVE Program / CVE List V5
Vulnerability Description
diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing.  An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment. This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815  NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
GNU diffutils 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU diffutils是美国GNU基金会开源的一套用于比较和合并文本文件的工具集。 GNU diffutils 3.12及之前版本存在数字错误漏洞，该漏洞源于行映射计算中存在多个有符号整数溢出，导致堆缓冲区溢出，可能造成攻击者通过控制diff程序输出触发越界写入，导致崩溃或远程代码执行。
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
GNU diffutils 0 ~ 3.12 -

II. Public POCs for CVE-2026-53910

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-53910

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-53910 (2)

Security Blog Posts for CVE-2026-53910 (1)

Other References for CVE-2026-53910 (1)

IV. Related Vulnerabilities

Same vendor: GNU
Same weakness: CWE-190

V. Comments for CVE-2026-53910

No comments yet

Leave a comment