How severe is CVE-2020-1799?

CVE-2020-1799 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-1799 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1799?

CVE-2020-1799 primarily affects Huawei E6878-370 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-1799?

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-2020-1799 published?

CVE-2020-1799 was published on 2020-05-21 and last updated on 2026-06-17.

CVE-2020-1799

CVE-2020-1799 is a high-severity vulnerability in Huawei E6878-370 Firmware 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-416.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.4
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Huawei E6878-370 Firmware
Published: 2020-05-21
Last modified: 2026-06-17

Description

E6878-370 with versions of 10.0.3.1(H557SP27C233), 10.0.3.1(H563SP1C00), 10.0.3.1(H563SP1C233) has a use after free vulnerability. The software references memory after it has been freed in certain scenario, the attacker does a series of crafted operations through web portal, successful exploit could cause a use after free condition which may lead to malicious code execution.

Frequently asked questions

What is CVE-2020-1799?: E6878-370 with versions of 10.0.3.1(H557SP27C233), 10.0.3.1(H563SP1C00), 10.0.3.1(H563SP1C233) has a use after free vulnerability. The software references memory after it has been freed in certain scenario, the attacker does a series of crafted operations through web portal, successful exploit could cause a use after free condition which may lead to malicious code execution.
How severe is CVE-2020-1799?: CVE-2020-1799 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-1799 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1799?: CVE-2020-1799 primarily affects Huawei E6878-370 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-1799?: 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-2020-1799 published?: CVE-2020-1799 was published on 2020-05-21 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200520-01-uaf-en

Affected products (3)

cpe:2.3:o:huawei:e6878-370_firmware:10.0.3.1\(h557sp27c233\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:e6878-370_firmware:10.0.3.1\(h563sp1c00\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:e6878-370_firmware:10.0.3.1\(h563sp1c233\):*:*:*:*:*:*:*

More vulnerabilities in Huawei E6878-370 Firmware

CVE-2020-1832 — High (CVSS 8.8): E6878-370 products with versions of 10.0.3.1(H557SP27C233) and 10.0.3.1(H563SP1C00) have a stack buffer overflow…
CVE-2020-9241 — High (CVSS 7.0): Huawei 5G Mobile WiFi E6878-370 with versions of 10.0.3.1(H563SP1C00),10.0.3.1(H563SP21C233) have an improper…
CVE-2020-9069 — Medium (CVSS 6.5): There is an information leakage vulnerability in some Huawei products. An unauthenticated, adjacent attacker could…
CVE-2020-9111 — Medium (CVSS 4.5): E6878-370 versions 10.0.3.1(H557SP27C233),10.0.3.1(H563SP21C233) and E6878-870 versions…

All CVEs affecting Huawei E6878-370 Firmware →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →