How severe is CVE-2017-2923?

CVE-2017-2923 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-2017-2923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2923?

CVE-2017-2923 primarily affects Freexl Project Freexl. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-2923?

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-2017-2923 published?

CVE-2017-2923 was published on 2018-04-24 and last updated on 2026-06-17.

CVE-2017-2923

CVE-2017-2923 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Freexl Project Freexl
Published: 2018-04-24
Last modified: 2026-06-17

Description

An exploitable heap based buffer overflow vulnerability exists in the 'read_biff_next_record function' of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.

Frequently asked questions

What is CVE-2017-2923?: An exploitable heap based buffer overflow vulnerability exists in the 'read_biff_next_record function' of FreeXL 1.0.3. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
How severe is CVE-2017-2923?: CVE-2017-2923 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-2017-2923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2923?: CVE-2017-2923 primarily affects Freexl Project Freexl. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-2923?: 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-2017-2923 published?: CVE-2017-2923 was published on 2018-04-24 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:freexl_project:freexl:1.0.3:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

More vulnerabilities in Freexl Project Freexl

CVE-2017-2924 — High (CVSS 8.8): An exploitable heap-based buffer overflow vulnerability exists in the read_legacy_biff function of FreeXL 1.0.3. A…
CVE-2018-7439 — High (CVSS 8.8): An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function…
CVE-2018-7438 — High (CVSS 8.8): An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the parse_unicode_string…
CVE-2018-7437 — High (CVSS 8.8): An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in a memcpy call of the…
CVE-2018-7436 — High (CVSS 8.8): An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in a pointer dereference of the…
CVE-2018-7435 — High (CVSS 8.8): An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the freexl::destroy_cell…

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