CVE-2018-7440 Command injection in n/a

What is CVE-2018-7440?

CVE-2018-7440 is a critical command injection vulnerability in Debian Debian Linux, published on 23 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Leptonica through 1.75.3. The gplotMakeOutput function allows command injection via a $(command) approach in the gplot rootname argument. This issue exists because of an incomplete fix for CVE-2018-3836.

Weakness: CWE-78

Which versions are affected by CVE-2018-7440?

It affects 2 products.

Products include Debian Debian Linux, Leptonica Leptonica.

How do I fix CVE-2018-7440?

Apply the vendor's patch.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2018-7440 being exploited?

There is no known exploitation of CVE-2018-7440 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-7440, GHSA-x83x-c4xw-rr5g, UBUNTU-CVE-2018-7440.