# CVE-2015-7392: Memory corruption in n/a

> Remote attackers can execute arbitrary code on FreeSWITCH servers by sending a malformed JSON string with a trailing unicode escape sequence.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Oct 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-h2p5-8h8f-7g53

## What is CVE-2015-7392?

CVE-2015-7392 is a high-severity memory corruption vulnerability in n/a, published on 5 Oct 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Heap-based buffer overflow in the parse_string function in libs/esl/src/esl_json.c in FreeSWITCH before 1.4.23 and 1.6.x before 1.6.2 allows remote attackers to execute arbitrary code via a trailing \u in a json string to cJSON_Parse.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2015-7392?

It affects 1 product.


Products: Freeswitch Freeswitch.

## How do I fix CVE-2015-7392?

No fix has been published for CVE-2015-7392 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-7392 being exploited?

There is no known exploitation of CVE-2015-7392 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-49841](https://insights.sbomify.com/CVE-2026-49841/): FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read (critical 9.8)
- [CVE-2019-19492](https://insights.sbomify.com/CVE-2019-19492/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2026-49840](https://insights.sbomify.com/CVE-2026-49840/): FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing (critical 9.1)
- [CVE-2021-41145](https://insights.sbomify.com/CVE-2021-41145/): FreeSWITCH susceptible to Denial of Service via SIP flooding (high 8.6)
- [CVE-2026-45771](https://insights.sbomify.com/CVE-2026-45771/): Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-7392 and fix it if it is affected.

What it is: CVE-2015-7392 is a high-severity memory corruption vulnerability in n/a, published on 5 Oct 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-7392 in the wild and no public exploit code.

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-2015-7392/ (Markdown: https://insights.sbomify.com/CVE-2015-7392/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-7392
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-7392
- OSV: https://osv.dev/vulnerability/CVE-2015-7392

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From sbomify Insights: https://insights.sbomify.com/CVE-2015-7392/
Summaries are generated and may contain mistakes; the official description above is the record.