TI-2025-05677 Aliases CVE-2025-6275 GHSA-w5x9-mj5j-cp4g

WebAssembly wabt binary-reader-interp.cc GetFuncOffset use after free

MEDIUM 55CWE-119Published 2025-06-19 · Updated 2025-06-23

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been declared as problematic. Affected by this vulnerability is the function GetFuncOffset of the file src/interp/binary-reader-interp.cc. The manipulation leads to use after free. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. A similar issue reported during the same timeframe was disputed by the code maintainer because it might not affect "real world wasm programs". Therefore, this entry might get disputed as well in the future.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00249 16th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD and the CNA

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
WebAssembly	wabt	1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.0.10; 1.0.11; 1.0.12; 1.0.13; 1.0.14; 1.0.15; 1.0.16; 1.0.17; 1.0.18; 1.0.19; 1.0.20; 1.0.21; 1.0.22; 1.0.23; 1.0.24; 1.0.25; 1.0.26; 1.0.27; 1.0.28; 1.0.29; 1.0.30; 1.0.31; 1.0.32; 1.0.33; 1.0.34; 1.0.35; 1.0.36; 1.0.37	—	No fix listed	CNA

wabt VendorWebAssembly Affected 1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.0.10; 1.0.11; 1.0.12; 1.0.13; 1.0.14; 1.0.15; 1.0.16; 1.0.17; 1.0.18; 1.0.19; 1.0.20; 1.0.21; 1.0.22; 1.0.23; 1.0.24; 1.0.25; 1.0.26; 1.0.27; 1.0.28; 1.0.29; 1.0.30; 1.0.31; 1.0.32; 1.0.33; 1.0.34; 1.0.35; 1.0.36; 1.0.37 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:webassembly:wabt::::::::	before 1.0.37	Vulnerable	WebAssembly

cpe:2.3:a:webassembly:wabt:*:*:*:*:*:*:*:* Versions before 1.0.37 Vulnerable ·WebAssembly

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2025-6275
2026-10-03 Alias added: GHSA-w5x9-mj5j-cp4g

References

Exploit 2

TI-2022-21123 wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component… CVSS 3.1HIGH 7.1
TI-2022-21125 wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component… CVSS 3.1HIGH 7.1
TI-2023-11935 WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::Decompiler::WrapChild. CVSS 3.1MEDIUM 5.5
TI-2022-21126 wasm2c v1.0.29 was discovered to contain an abort in CWriter::Write. CVSS 3.1MEDIUM 5.5
TI-2025-02083 WebAssembly wabt Malformed File binary-reader-interp.cc OnExport heap-based overflow CVSS 4.0MEDIUM 5.3
TI-2025-14056 WebAssembly wabt wasm-decompile VarName out-of-bounds CVSS 4.0MEDIUM 4.8

See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences