How severe is CVE-2015-4646?

CVE-2015-4646 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2015-4646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4646?

CVE-2015-4646 affects Squashfs Project Squashfs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4646?

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-2015-4646 published?

CVE-2015-4646 was published on 2017-04-13 and last updated on 2026-06-17.

CVE-2015-4646

CVE-2015-4646 is a high-severity vulnerability in Squashfs Project Squashfs with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Squashfs Project Squashfs
Published: 2017-04-13
Last modified: 2026-06-17

Description

(1) unsquash-1.c, (2) unsquash-2.c, (3) unsquash-3.c, and (4) unsquash-4.c in Squashfs and sasquatch allow remote attackers to cause a denial of service (application crash) via a crafted input.

Frequently asked questions

What is CVE-2015-4646?: (1) unsquash-1.c, (2) unsquash-2.c, (3) unsquash-3.c, and (4) unsquash-4.c in Squashfs and sasquatch allow remote attackers to cause a denial of service (application crash) via a crafted input.
How severe is CVE-2015-4646?: CVE-2015-4646 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2015-4646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4646?: CVE-2015-4646 affects Squashfs Project Squashfs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4646?: 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-2015-4646 published?: CVE-2015-4646 was published on 2017-04-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:squashfs_project:squashfs:*:*:*:*:*:*:*:*

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