In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function…
Priority LOW 31CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party
Why it matters now
EPSS 0.01159 67th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:invisible-island:ncurses:6.1:*:*:*:*:*:*:* | 6.1 | Vulnerable | Invisible-island |
- cpe:2.3:a:invisible-island:ncurses:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·Invisible-island
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-19217
- 2026-10-03 Alias added: GHSA-gm6j-8p43-6m5w
References
More Invisible-island Ncurses vulnerabilities
- TI-2025-42919 Stack-based buffer overflow in GNU ncurses CVSS 3.1CRITICAL 9.8
- TI-2020-13550 Buffer Overflow vulnerability in _nc_find_entry function in tinfo/comp_hash.c:66 in… CVSS 3.1MEDIUM 6.5
- TI-2017-07812 In ncurses 6.0, there is a stack-based buffer overflow in the fmt_entry function. CVSS 3.0CRITICAL 9.8
- TI-2017-07813 In ncurses 6.0, there is a format string vulnerability in the fmt_entry function. CVSS 3.0CRITICAL 9.8
- TI-2021-16802 An issue was discovered in ncurses through v6.2-1. CVSS 3.1HIGH 8.8
- TI-2017-12424 Stack-based buffer overflow in the _nc_write_entry function in tinfo/write_entry.c in… CVSS 3.1HIGH 7.8
Sources
- CVE-2018-19217 · CVE Program
- CVE-2018-19217 · NVD
- FIRST EPSS
- GHSA-gm6j-8p43-6m5w · GitHub Advisory Database · CC BY 4.0
- CVE-2018-19217 · Red Hat security data · CC BY 4.0
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