CVE-2021-44081
CVE-2021-44081 is a high-severity vulnerability in Open5gs 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Open5gs
- Published:
- Last modified:
Description
A buffer overflow vulnerability exists in the AMF of open5gs 2.1.4. When the length of MSIN in Supi exceeds 24 characters, it leads to AMF denial of service.
Frequently asked questions
- What is CVE-2021-44081?
- A buffer overflow vulnerability exists in the AMF of open5gs 2.1.4. When the length of MSIN in Supi exceeds 24 characters, it leads to AMF denial of service.
- How severe is CVE-2021-44081?
- CVE-2021-44081 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-2021-44081 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-44081?
- CVE-2021-44081 affects Open5gs. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-44081?
- 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-2021-44081 published?
- CVE-2021-44081 was published on 2022-03-29 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:open5gs:open5gs:2.1.4:*:*:*:*:*:*:*
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