Read the docs
TI-2025-05675 Aliases CVE-2025-6273GHSA-frwp-9m3q-pjc8

WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion

Priority MEDIUM 55CWE-617Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
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. Impact type from CWE-617.

Summary

A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect "real world wasm programs".

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00235 14th 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

VendorProductAffected versionsFixed inStatusSource
WebAssemblywabt1.0.0; 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 listedCNA
  • 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

CPEVersionsRoleVendor
cpe:2.3:a:webassembly:wabt:*:*:*:*:*:*:*:*up to 1.0.37VulnerableWebAssembly
  • cpe:2.3:a:webassembly:wabt:*:*:*:*:*:*:*:* Versions up to 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 →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-6273
  2. 2026-10-03 Alias added: GHSA-frwp-9m3q-pjc8

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