How severe is CVE-2022-43677?

CVE-2022-43677 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-2022-43677 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43677?

CVE-2022-43677 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43677?

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

When was CVE-2022-43677 published?

CVE-2022-43677 was published on 2022-10-24 and last updated on 2026-06-17.

CVE-2022-43677

CVE-2022-43677 is a medium-severity vulnerability in Free5gc 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.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Free5gc
Published: 2022-10-24
Last modified: 2026-06-17

Description

In free5GC 3.2.1, a malformed NGAP message can crash the AMF and NGAP decoders via an index-out-of-range panic in aper.GetBitString.

Frequently asked questions

What is CVE-2022-43677?: In free5GC 3.2.1, a malformed NGAP message can crash the AMF and NGAP decoders via an index-out-of-range panic in aper.GetBitString.
How severe is CVE-2022-43677?: CVE-2022-43677 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-2022-43677 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43677?: CVE-2022-43677 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43677?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-43677 published?: CVE-2022-43677 was published on 2022-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:free5gc:free5gc:3.2.1:*:*:*:*:*:*:*

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