How severe is CVE-2021-40042?

CVE-2021-40042 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-40042 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40042?

CVE-2021-40042 primarily affects Huawei Cloudengine 12800 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40042?

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

When was CVE-2021-40042 published?

CVE-2021-40042 was published on 2022-01-31 and last updated on 2026-06-17.

CVE-2021-40042

CVE-2021-40042 is a medium-severity vulnerability in Huawei Cloudengine 12800 Firmware with a CVSS 3.x base score of 6.5. 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-763.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-763
Affected product: Huawei Cloudengine 12800 Firmware
Published: 2022-01-31
Last modified: 2026-06-17

Description

There is a release of invalid pointer vulnerability in some Huawei products, successful exploit may cause the process and service abnormal. Affected product versions include: CloudEngine 12800 V200R019C10SPC800, V200R019C10SPC900; CloudEngine 5800 V200R019C10SPC800, V200R020C00SPC600; CloudEngine 6800 versions V200R019C10SPC800, V200R019C10SPC900, V200R020C00SPC600, V300R020C00SPC200; CloudEngine 7800 V200R019C10SPC800.

Frequently asked questions

What is CVE-2021-40042?: There is a release of invalid pointer vulnerability in some Huawei products, successful exploit may cause the process and service abnormal. Affected product versions include: CloudEngine 12800 V200R019C10SPC800, V200R019C10SPC900; CloudEngine 5800 V200R019C10SPC800, V200R020C00SPC600; CloudEngine 6800 versions V200R019C10SPC800, V200R019C10SPC900, V200R020C00SPC600, V300R020C00SPC200; CloudEngine 7800 V200R019C10SPC800.
How severe is CVE-2021-40042?: CVE-2021-40042 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-40042 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40042?: CVE-2021-40042 primarily affects Huawei Cloudengine 12800 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40042?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40042 published?: CVE-2021-40042 was published on 2022-01-31 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20220112-01-invalid-en

Affected products (9)

cpe:2.3:o:huawei:cloudengine_12800_firmware:v200r019c10spc800:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_12800_firmware:v200r019c10spc900:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_5800_firmware:v200r019c10spc800:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_5800_firmware:v200r020c00spc600:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_6800_firmware:v200r019c10spc800:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_6800_firmware:v200r019c10spc900:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_6800_firmware:v200r020c00spc600:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_6800_firmware:v300r020c00spc200:*:*:*:*:*:*:*
cpe:2.3:o:huawei:cloudengine_7800_firmware:v200r019c10spc800:*:*:*:*:*:*:*

More vulnerabilities in Huawei Cloudengine 12800 Firmware

CVE-2017-17301 — Critical (CVSS 9.8): Huawei AR120-S V200R005C32, V200R006C10, V200R007C00, V200R008C20, AR1200 V200R005C20, V200R005C32, V200R006C10,…
CVE-2016-6178 — Critical (CVSS 9.8): Huawei NE40E and CX600 devices with software before V800R007SPH017; PTN 6900-2-M8 devices with software before…
CVE-2020-9207 — High (CVSS 7.8): There is an improper authentication vulnerability in some verisons of Huawei CloudEngine product. A module does not…
CVE-2021-40008 — High (CVSS 7.5): There is a memory leak vulnerability in CloudEngine 12800 V200R019C00SPC800, CloudEngine 5800 V200R019C00SPC800,…
CVE-2021-22328 — High (CVSS 7.5): There is a denial of service vulnerability in some huawei products. In specific scenarios, due to the improper handling…
CVE-2021-22332 — High (CVSS 7.5): There is a pointer double free vulnerability in some versions of CloudEngine 5800, CloudEngine 6800, CloudEngine 7800…

All CVEs affecting Huawei Cloudengine 12800 Firmware →

Other CWE-763 vulnerabilities

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CVE-2024-44852 — Critical (CVSS 9.8): Open Robotics Robotic Operating System 2 ROS2 navigation2 v.humble was discovered to contain a segmentation violation…
CVE-2021-42377 — Critical (CVSS 9.8): An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution…
CVE-2021-30473 — Critical (CVSS 9.8): aom_image.c in libaom in AOMedia before 2021-04-07 frees memory that is not located on the heap.
CVE-2021-24028 — Critical (CVSS 9.8): An invalid free in Thrift's table-based serialization can cause the application to crash or potentially result in code…

Browse all CWE-763 vulnerabilities →