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Fencer Intel
high 8.8

CVE-2018-7439 json

An issue was discovered in FreeXL before 1.0.5.

published 2018-02-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19170

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Patch / fix

  • freexl_project freexl 1.0.5
  • freexl Debian 14, Debian 13, Debian 12 1.0.5-1

debian advisories DEBIAN-CVE-2018-7439

  • freexl Ubuntu 14.04 LTS 1.0.0g-1ubuntu0.14.04.3
  • freexl Ubuntu 16.04 LTS 1.0.2-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2018-7439

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • freexl openSUSE Tumbleweed 1.0.6-1.3
  • freexl Package Hub 12 1.0.5-8.1

opensuse advisories openSUSE-SU-2024:10771-1openSUSE-SU-2018:0569-1openSUSE-SU-2018:0570-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-7439 updated cvss 4.3

freexl: heap-based buffer over-read in the function read_mini_biff_next_record

  • Red Hat Enterprise Linux 8 freexl
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.14% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1547892 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.