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TI-2018-14639 Aliases CVE-2018-20618GHSA-hc5r-vm96-h4gh

ok-file-formats through 2018-10-16 has a heap-based buffer over-read in the ok_mo_decode2 function in ok_mo.c.

Priority HIGH 73CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

ok-file-formats through 2018-10-16 has a heap-based buffer over-read in the ok_mo_decode2 function in ok_mo.c.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01419 72nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ok-file-formats_project:ok-file-formats:*:*:*:*:*:*:*:*up to 2018-10-16VulnerableOk-file-formats Project
  • cpe:2.3:a:ok-file-formats_project:ok-file-formats:*:*:*:*:*:*:*:* Versions up to 2018-10-16 Vulnerable ·Ok-file-formats Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20618
  2. 2026-10-03 Alias added: GHSA-hc5r-vm96-h4gh

References

Exploit 1

  • TI-2021-09443 Heap-based Buffer Overflow vulnerability exists in ok-file-formats 1 via the… CVSS 3.1HIGH 8.8
  • TI-2018-14638 ok-file-formats through 2018-10-16 has a heap-based buffer overflow in the ok_csv_decode2 function in ok_csv.c. CVSS 3.0HIGH 8.8
  • TI-2018-14637 ok-file-formats through 2018-10-16 has a heap-based buffer overflow in the… CVSS 3.0HIGH 8.8
  • TI-2021-18217 ok-file-formats master 2021-9-12 is affected by a buffer overflow in… CVSS 3.1HIGH 7.8
  • TI-2021-12085 ok-file-formats through 2021-04-29 has a heap-based buffer overflow in the… CVSS 3.1HIGH 7.8
  • TI-2021-19961 David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow. CVSS 3.1HIGH 7.8
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences