CVE-2026-18739
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| rpm-software-management | popt | 1.1.1 < * | affected |
| Red Hat | Red Hat Hardened Images | 1.19-11.1.hum1 < * | unaffected |
Weaknesses
- CWE-787: Out-of-bounds Write
Workarounds
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://access.redhat.com/errata/RHSA-2026:56984
- https://access.redhat.com/security/cve/CVE-2026-18739
- https://bugzilla.redhat.com/show_bug.cgi?id=2510737
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