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Vulnerabilities

Vulnerability · CVE-2025-0577

An insufficient entropy vulnerability was found in glibc.

Published Feb 18, 2026 · catalog updated Feb 25, 2026 · An insufficient entropy vulnerability

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-0577. EPSS is 0.25%. Act only if a listed version of An insufficient entropy vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An insufficient entropy vulnerability).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Advisory link
Affected products
vendor fedora

An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor fedoraversion unspecified

How to fix CVE-2025-0577

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-0577. EPSS is 0.25%. Act only if a listed version of An insufficient entropy vulnerability is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 18, 2026 · EUVD

    Detected

    An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.

  2. Feb 25, 2026 · EUVD

    Updated

    An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.

Sources

  • CVE.orgVulnerability recordCVE-2025-0577

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-0577

    30-day exploitation probability 0.25%

    first.org
  • EUVDVulnerability recordEUVD-2025-207796

    An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • CVE.orgNov 9, 2026
  • EUVDNov 9, 2026