CVE-2026-5314— Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds
Quick assessment
Affected
Nothings stb
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.
stb是Sean Barrett个人开发者的一个用于C/C++的stb单文件公共域库。 stb 1.26及之前版本存在缓冲区错误漏洞，该漏洞源于TTF File Handler组件中stb_truetype.h库的stbtt_InitFont_internal函数存在越界读取，可能导致远程攻击。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5314
Vulnerability Information
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Vulnerability Title
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Nothings stb up to 1.26. Impacted is the function stbtt_InitFont_internal in the library stb_truetype.h of the component TTF File Handler. Performing a manipulation results in out-of-bounds read. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
stb 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stb是Sean Barrett个人开发者的一个用于C/C++的stb单文件公共域库。 stb 1.26及之前版本存在缓冲区错误漏洞，该漏洞源于TTF File Handler组件中stb_truetype.h库的stbtt_InitFont_internal函数存在越界读取，可能导致远程攻击。
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-2026-5314
| # | POC Description | Source Link | Shenlong Link |
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Proof of Concept for CVE-2026-5314 (1)
Same Patch Batch · Nothings · 2026-04-01 · 3 CVEs total
| CVE-2026-5313 | 4.3 MEDIUM | Nothings stb GIF Decoder stb_image.h stbi__gif_load_next denial of service |
| CVE-2026-5315 | 4.3 MEDIUM | Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of-bounds |
IV. Related Vulnerabilities
Same product: stb
-
CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write -
CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources -
CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- -
CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den -
CVE-2026-5186
Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif
Same vendor: Nothings
-
CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write -
CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources -
CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- -
CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den -
CVE-2026-5186
Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif
Same weakness: CWE-125
-
CVE-2026-78157
Open5GS Rx AA-Request pcrf-rx-path.c pcrf_rx_aar_cb out-of-b -
CVE-2026-78049
Systerel S2OPC AddNodes Service sopc_node_mgt_helper_interna -
CVE-2026-54789
mod_auth_openidc has out-of-bounds read and write in state c -
CVE-2026-50278
iccDEV: CIccEmbedIO::Read8() size_t underflow -
CVE-2026-18716
Vulnerabilities in IBM AIX and PowerVM VIOS
V. Comments for CVE-2026-5314
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