CVE-2023-48105 — An heap overflow vulnerability was discovered in Bytecode alliance wasm-micro-ru

An heap overflow vulnerability was discovered in Bytecode alliance wasm-micro-runtime v.1.2.3 allows a remote attacker to cause a denial of service via the wasm_loader_prepare_bytecode function in core/iwasm/interpreter/wasm_loader.c.

01What is this vulnerability?

An heap overflow vulnerability was discovered in Bytecode alliance wasm-micro-runtime v.1.2.3 allows a remote attacker to cause a denial of service via the wasm_loader_prepare_bytecode function in core/iwasm/interpreter/wasm_loader.c.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-11-22T23:15:10.617
• Last modified: 2026-07-09T01:18:44.727

09References

• github.com — https://github.com/bytecodealliance/wasm-micro-runtime/issues/2726
• github.com — https://github.com/bytecodealliance/wasm-micro-runtime/pull/2734/commits/4785d91…
• github.com — https://github.com/bytecodealliance/wasm-micro-runtime/issues/2726
• github.com — https://github.com/bytecodealliance/wasm-micro-runtime/pull/2734/commits/4785d91…