Is there a public exploit for CVE-2026-18739?

No public exploit for CVE-2026-18739 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-18739?

CVE-2026-18739 scores CVSS 2.5 (v3.1), rated low. EPSS puts the chance of exploitation in the next 30 days at 0.14%.

What does CVE-2026-18739 affect?

CVE-2026-18739 affects rpm-software-management, Red Hat popt, Red Hat Hardened Images.

2.5 Low

A flaw was found in popt, a command-line option parsing library.

CVE-2026-18739

A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

Assessment

CVSS: 2.5 (v3.1)
Severity: Low
EPSS: 0.14% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 August 2026
Last updated: 6 November 2026
Affected: Red Hat · rpm-software-management · Red Hat Hardened Images · popt
Assigner: redhat

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

At the source

EUVD (ENISA)

References

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