aria2 up to 1.37.0 IOFile::getLine stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in aria2 up to 1.37.0. Affected is the function IOFile::getLine. Such manipulation leads to stack-based overflow. This vulnerability is documented as CVE-2026-75421. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in aria2 up to 1.37.0. It has been rated as critical. Affected by this issue is the function IOFile::getLine. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-75421 since 08/17/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• aria2

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37.0

Website

• Product: https://github.com/aria2/aria2/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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