Ghostscript <= 10.07.0 Buffer Overflow Vulnerability: Early Warning
- Severity
- CRITICAL
- CVSS
- 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- Affected component
- ghostscript (other)
- Patched version
- 10.08.0
An early warning has been issued for a critical heap-based buffer overflow vulnerability in Ghostscript versions prior to 10.08.0. This vulnerability, tracked as CVE-2026-39919, could allow attackers to cause memory corruption and achieve code execution.
What happened
Ghostscript versions prior to 10.08.0 reportedly contain a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter. This vulnerability, identified as CVE-2026-39919, has a CVSS score of 9.8, indicating a critical severity level. The vulnerability allows attackers to cause memory corruption, which could lead to arbitrary code execution. Versions prior to 10.08.0 are affected. To assess your exposure, check if your systems are running any version of Ghostscript prior to 10.08.0.
The vulnerability was first flagged on 2026-09-15T15:17:14.723000+00:00. It is under investigation and has not yet been exploited in the wild. The recommended action is to upgrade to Ghostscript 10.08.0 or later to mitigate the risk.
What to do about it
- Identify all instances of Ghostscript in your environment.
- Check the version of Ghostscript currently in use.
- Upgrade to Ghostscript 10.08.0 or later to mitigate the risk.
- Monitor the primary sources for updates on the vulnerability and any additional patches that may be released.
How 0Day would have caught this
ghostscript is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.
Frequently asked questions
Am I affected?
You are affected if you are using Ghostscript versions prior to 10.08.0.
What should I do right now?
Upgrade to Ghostscript 10.08.0 or later to mitigate the risk.
Has this been exploited in the wild?
No, this vulnerability has not yet been exploited in the wild.
Where can I find more information?
Consult the primary source at https://nvd.nist.gov/vuln/detail/CVE-2026-39919 for more information.