Nothings stb up to 1.26 TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds

Summaryinfo

A vulnerability described as problematic has been identified in Nothings stb up to 1.26. The affected element is the function stbtt_InitFont_internal in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds. This vulnerability is handled as CVE-2026-5314. The attack can be executed remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as problematic was found in Nothings stb up to 1.26. This vulnerability affects the function stbtt_InitFont_internal in the library stb_truetype.h of the component TTF File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability.

The advisory is available at gist.github.com. This vulnerability was named CVE-2026-5314. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

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

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Productinfo

Vendor

• Nothings

Name

• stb

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

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #780558: nothings stb (stb_truetype.h) ≤ 1.26 Out-of-Bounds Read (by d0razi)

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