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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.

PUBLISHED Reserved 2026-04-01 | Published 2026-04-01 | Updated 2026-04-02 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Out-of-Bounds Read

Memory Corruption

Product status

1.0
affected

1.1
affected

1.2
affected

1.3
affected

1.4
affected

1.5
affected

1.6
affected

1.7
affected

1.8
affected

1.9
affected

1.10
affected

1.11
affected

1.12
affected

1.13
affected

1.14
affected

1.15
affected

1.16
affected

1.17
affected

1.18
affected

1.19
affected

1.20
affected

1.21
affected

1.22
affected

1.23
affected

1.24
affected

1.25
affected

1.26
affected

Timeline

2026-04-01:Advisory disclosed
2026-04-01:VulDB entry created
2026-04-01:VulDB entry last update

Credits

d0razi (VulDB User) reporter

VulDB coordinator

References

vuldb.com/vuln/354646 (VDB-354646 | Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds) vdb-entry technical-description

vuldb.com/vuln/354646/cti (VDB-354646 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/780558 (Submit #780558 | nothings stb (stb_truetype.h) ≤ 1.26 Out-of-Bounds Read) third-party-advisory

gist.github.com/d0razi/cb31a92f3205a4373f19b7da25946848 exploit

cve.org (CVE-2026-5314)

nvd.nist.gov (CVE-2026-5314)

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