CVE-2017-5462 Weak cryptography in Firefox

What is CVE-2017-5462?

CVE-2017-5462 is a medium-severity vulnerability in Debian Debian Linux, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw in DRBG number generation within the Network Security Services (NSS) library where the internal state V does not correctly carry bits over. The NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated with NSS version 3.28.4. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Weakness: CWE-682

Which versions are affected by CVE-2017-5462?

It affects 4 products.

Products include Debian Debian Linux, Mozilla Firefox, Mozilla Network Security Services, Mozilla Thunderbird.

How do I fix CVE-2017-5462?

Upgrade to a fixed version.

Is CVE-2017-5462 being exploited?

There is no known exploitation of CVE-2017-5462 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 ALPINE-CVE-2017-5462, DEBIAN-CVE-2017-5462, GHSA-cv99-mqp9-mr8m, UBUNTU-CVE-2017-5462.