How severe is CVE-2021-46171?

CVE-2021-46171 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-2021-46171 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46171?

CVE-2021-46171 affects Modex Project Modex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46171?

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

When was CVE-2021-46171 published?

CVE-2021-46171 was published on 2022-01-14 and last updated on 2026-06-17.

CVE-2021-46171

CVE-2021-46171 is a medium-severity vulnerability in Modex Project Modex 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% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Modex Project Modex
Published: 2022-01-14
Last modified: 2026-06-17

Description

Modex v2.11 was discovered to contain a NULL pointer dereference in set_create_id() at xtract.c.

Frequently asked questions

What is CVE-2021-46171?: Modex v2.11 was discovered to contain a NULL pointer dereference in set_create_id() at xtract.c.
How severe is CVE-2021-46171?: CVE-2021-46171 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-2021-46171 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46171?: CVE-2021-46171 affects Modex Project Modex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46171?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46171 published?: CVE-2021-46171 was published on 2022-01-14 and last updated on 2026-06-17.

References

https://github.com/nimble-code/Modex/issues/8

Affected products (1)

cpe:2.3:a:modex_project:modex:2.11:*:*:*:*:*:*:*

More vulnerabilities in Modex Project Modex

CVE-2021-46169 — Medium (CVSS 5.5): Modex v2.11 was discovered to contain an Use-After-Free vulnerability via the component tcache.

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