How severe is CVE-2021-45847?

CVE-2021-45847 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-45847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45847?

CVE-2021-45847 affects Slic3r. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45847?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-45847 published?

CVE-2021-45847 was published on 2022-01-25 and last updated on 2026-06-17.

CVE-2021-45847

CVE-2021-45847 is a medium-severity vulnerability in Slic3r with a CVSS 3.x base score of 5.5. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Slic3r
Published: 2022-01-25
Last modified: 2026-06-17

Description

Several missing input validations in the 3MF parser component of Slic3r libslic3r 1.3.0 can each allow an attacker to cause an application crash using a crafted 3MF input file.

Frequently asked questions

What is CVE-2021-45847?: Several missing input validations in the 3MF parser component of Slic3r libslic3r 1.3.0 can each allow an attacker to cause an application crash using a crafted 3MF input file.
How severe is CVE-2021-45847?: CVE-2021-45847 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-45847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45847?: CVE-2021-45847 affects Slic3r. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45847 published?: CVE-2021-45847 was published on 2022-01-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:slic3r:slic3r:1.3.0:*:*:*:*:*:*:*

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