How severe is CVE-2018-7436?

CVE-2018-7436 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-7436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7436?

CVE-2018-7436 primarily affects Freexl Project Freexl. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7436?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-7436 published?

CVE-2018-7436 was published on 2018-02-23 and last updated on 2026-06-17.

CVE-2018-7436

CVE-2018-7436 is a high-severity vulnerability in Freexl Project Freexl with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Freexl Project Freexl
Published: 2018-02-23
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2018-7436?: An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in a pointer dereference of the parse_SST function.
How severe is CVE-2018-7436?: CVE-2018-7436 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-7436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7436?: CVE-2018-7436 primarily affects Freexl Project Freexl. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-7436 published?: CVE-2018-7436 was published on 2018-02-23 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:freexl_project:freexl:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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