# CVE-2022-39244: Buffer overflow in pjlib scanner and pjmedia

> Buffer overflow in PJSIP parser and media components allows attackers to execute code or cause denial of service via untrusted clients.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 6 Oct 2022
- **Updated:** 4 Nov 2025
- **Also known as:** ALPINE-CVE-2022-39244, DEBIAN-CVE-2022-39244, GHSA-fq45-m3f7-3mhj, UBUNTU-CVE-2022-39244

## What is CVE-2022-39244?

CVE-2022-39244 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 6 Oct 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

PJSIP is a free and open source multimedia communication library written in C. In versions of PJSIP prior to 2.13 the PJSIP parser, PJMEDIA RTP decoder, and PJMEDIA SDP parser are affeced by a buffer overflow vulnerability. Users connecting to untrusted clients are at risk. This issue has been patched and is available as commit c4d3498 in the master branch and will be included in releases 2.13 and later. Users are advised to upgrade. There are no known workarounds for this issue.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2022-39244?

It affects 1 product.


Products: Pjsip Pjsip.

## How do I fix CVE-2022-39244?

Upgrade to a fixed version.

## Is CVE-2022-39244 being exploited?

There is no known exploitation of CVE-2022-39244 in the wild and no public exploit code.

## Other vulnerabilities in pjsip pjproject

- [CVE-2026-28799](https://insights.sbomify.com/CVE-2026-28799/): PJSIP: Heap use-after-free in PJSIP presence subscription termination handler (high 8.7)
- [CVE-2026-29068](https://insights.sbomify.com/CVE-2026-29068/): PJSIP: Stack buffer overflow in Opus codec parser (high 8.7)
- [CVE-2026-40614](https://insights.sbomify.com/CVE-2026-40614/): PJSIP: Heap buffer overflow in Opus codec decoding (high 8.5)
- [CVE-2026-32945](https://insights.sbomify.com/CVE-2026-32945/): PJSIP is vulnerable to Heap-based Buffer Overflow through DNS parser (high 8.4)
- [CVE-2026-40892](https://insights.sbomify.com/CVE-2026-40892/): PJSIP: Stack buffer overflow in pjsip_auth_create_digest2() (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-39244 and fix it if it is affected.

What it is: CVE-2022-39244 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 6 Oct 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2022-39244 in the wild and no public exploit code.

Affected product: pjsip pjproject. 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-2022-39244/ (Markdown: https://insights.sbomify.com/CVE-2022-39244/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-39244
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-39244
- OSV: https://osv.dev/vulnerability/CVE-2022-39244

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-39244/
Summaries are generated and may contain mistakes; the official description above is the record.