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CVE-2018-7439

27
FAUCET Score

CVE-2018-7439 is a heap-based buffer over-read vulnerability in FreeXL versions prior to 1.0.5, affecting Debian Linux and FreeXL projects. This high-severity vulnerability (CVSS 8.8) can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.5CPE matchmatch criteria
cpe:2.3:a:freexl_project:freexl:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.18%
Probability of exploitation in next 30 days
EPSS Percentile
80.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0218 is in the 79th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: freexl

Vendor Advisories (1)

redhatCVE-2018-7439Low

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

Feb 22, 2018

References

bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
groups.google.com / forum
lists.debian.org / debian-lts-announce/2018/03/msg00000.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/202007-44
debian.org / security/2018/dsa-4129
Third Party Advisory