# CVE-2023-48105: Memory corruption in n/a

> A heap overflow in the wasm-micro-runtime library allows remote attackers to cause a denial of service via crafted bytecode.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Nov 2023
- **Updated:** 9 Jul 2026
- **Also known as:** AZL-32060, GHSA-w252-369w-2g4v

## What is CVE-2023-48105?

CVE-2023-48105 is a high-severity memory corruption vulnerability in n/a, published on 22 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-48105?

It affects 1 product.


Products: Bytecodealliance Webassembly Micro Runtime.

## How do I fix CVE-2023-48105?

Upgrade to a fixed version.

## Is CVE-2023-48105 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-48105 exists.

## Other vulnerabilities in n/a

- [CVE-2024-25431](https://insights.sbomify.com/CVE-2024-25431/): Memory corruption in n/a (high 8.8)
- [CVE-2024-27532](https://insights.sbomify.com/CVE-2024-27532/): Null dereference in n/a (high 7.5)
- [CVE-2024-34251](https://insights.sbomify.com/CVE-2024-34251/): Memory corruption in n/a (high 7.5)
- [CVE-2025-43853](https://insights.sbomify.com/CVE-2025-43853/): iwasm vulnerable to filesystem sandbox escape with symlink when using uvwasi feature (high 7.0)
- [CVE-2025-54126](https://insights.sbomify.com/CVE-2025-54126/): WebAssembly Micro Runtime's `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-48105 and fix it if it is affected.

What it is: CVE-2023-48105 is a high-severity memory corruption vulnerability in n/a, published on 22 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-48105 exists.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-48105/ (Markdown: https://insights.sbomify.com/CVE-2023-48105/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48105
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48105
- OSV: https://osv.dev/vulnerability/CVE-2023-48105

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48105/
Summaries are generated and may contain mistakes; the official description above is the record.