What is the CVSS score of CVE-2021-22321?

CVE-2021-22321 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.7%.

Nip6300 Firmware CVE-2021-22321

MEDIUM

Use After Free (CWE-416)

2021-03-22 psirt@huawei.com

Use After Free Huawei Memory Corruption Information Disclosure Nip6300 Firmware Nip6600 Firmware Nip6800 Firmware S12700 Firmware S1700 Firmware S2700 Firmware S5700 Firmware S6700 Firmware S7700 Firmware S9700 Firmware Secospace Usg6300 Firmware Secospace Usg6500 Firmware Secospace Usg6600 Firmware Usg9500 Firmware

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

CVE Published

Mar 22, 2021 - 20:15 nvd

MEDIUM 5.3

DescriptionNVD

There is a use-after-free vulnerability in a Huawei product. A module cannot deal with specific operations in special scenarios. Attackers can exploit this vulnerability by performing malicious operations. This can cause memory use-after-free, compromising normal service. Affected product include some versions of NIP6300, NIP6600, NIP6800, S1700, S2700, S5700, S6700 , S7700, S9700, Secospace USG6300, Secospace USG6500, Secospace USG6600 and USG9500.

AnalysisAI

There is a use-after-free vulnerability in a Huawei product. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. There is a use-after-free vulnerability in a Huawei product. A module cannot deal with specific operations in special scenarios. Attackers can exploit this vulnerability by performing malicious operations. This can cause memory use-after-free, compromising normal service. Affected product include some versions of NIP6300, NIP6600, NIP6800, S1700, S2700, S5700, S6700 , S7700, S9700, Secospace USG6300, Secospace USG6500, Secospace USG6600 and USG9500. Affected products include: Huawei Nip6300 Firmware, Huawei Nip6600 Firmware, Huawei Nip6800 Firmware, Huawei S12700 Firmware, Huawei S1700 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.