# CVE-2019-15946: Memory corruption in n/a

> An out-of-bounds access in OpenSC's ASN.1 decoder allows attackers to cause memory corruption, potentially leading to code execution or crashes.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Sep 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-15946, GHSA-mqh2-9c27-h9wq, UBUNTU-CVE-2019-15946

## What is CVE-2019-15946?

CVE-2019-15946 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 5 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c.

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

## Which versions are affected by CVE-2019-15946?

It affects 3 products.


Products: Debian Debian Linux, Fedoraproject Fedora, Opensc Project Opensc.

## How do I fix CVE-2019-15946?

Upgrade to a fixed version.

## Is CVE-2019-15946 being exploited?

There is no known exploitation of CVE-2019-15946 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-15946 and fix it if it is affected.

What it is: CVE-2019-15946 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 5 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-15946 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2019-15946/ (Markdown: https://insights.sbomify.com/CVE-2019-15946/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-15946
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-15946
- OSV: https://osv.dev/vulnerability/CVE-2019-15946

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-15946/
Summaries are generated and may contain mistakes; the official description above is the record.