How severe is CVE-2020-1818?

CVE-2020-1818 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2020-1818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1818?

CVE-2020-1818 primarily affects Huawei Ips Module Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-1818?

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

Does CVE-2020-1818 have an EU (EUVD) identifier?

Yes. CVE-2020-1818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-12644.

When was CVE-2020-1818 published?

CVE-2020-1818 was published on 2024-12-27 and last updated on 2026-06-17.

CVE-2020-1818

CVE-2020-1818 is a low-severity vulnerability in Huawei Ips Module Firmware with a CVSS 3.x base score of 3.7. 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-125.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-12644
Weakness: CWE-125
Affected product: Huawei Ips Module Firmware
Published: 2024-12-27
Last modified: 2026-06-17

Description

There are multiple out of bounds (OOB) read vulnerabilities in the implementation of the Common Open Policy Service (COPS) protocol of some Huawei products. The specific decoding function may occur out-of-bounds read when processes an incoming data packet. Successful exploit of these vulnerabilities may disrupt service on the affected device. (Vulnerability ID: HWPSIRT-2018-12275,HWPSIRT-2018-12276,HWPSIRT-2018-12277,HWPSIRT-2018-12278,HWPSIRT-2018-12279,HWPSIRT-2018-12280 and HWPSIRT-2018-12289) The seven vulnerabilities have been assigned seven Common Vulnerabilities and Exposures (CVE) IDs: CVE-2020-1818, CVE-2020-1819, CVE-2020-1820, CVE-2020-1821, CVE-2020-1822, CVE-2020-1823 and CVE-2020-1824.

Frequently asked questions

What is CVE-2020-1818?: There are multiple out of bounds (OOB) read vulnerabilities in the implementation of the Common Open Policy Service (COPS) protocol of some Huawei products. The specific decoding function may occur out-of-bounds read when processes an incoming data packet. Successful exploit of these vulnerabilities may disrupt service on the affected device. (Vulnerability ID: HWPSIRT-2018-12275,HWPSIRT-2018-12276,HWPSIRT-2018-12277,HWPSIRT-2018-12278,HWPSIRT-2018-12279,HWPSIRT-2018-12280 and HWPSIRT-2018-12289) The seven vulnerabilities have been assigned seven Common Vulnerabilities and Exposures (CVE) IDs: CVE-2020-1818, CVE-2020-1819, CVE-2020-1820, CVE-2020-1821, CVE-2020-1822, CVE-2020-1823 and CVE-2020-1824.
How severe is CVE-2020-1818?: CVE-2020-1818 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2020-1818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1818?: CVE-2020-1818 primarily affects Huawei Ips Module Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-1818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-1818 have an EU (EUVD) identifier?: Yes. CVE-2020-1818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-12644.
When was CVE-2020-1818 published?: CVE-2020-1818 was published on 2024-12-27 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/2020/huawei-sa-20191218-01-cops-en

Affected products (23)

cpe:2.3:o:huawei:ips_module_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_module_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_module_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ngfw_module_firmware:v500r002c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ngfw_module_firmware:v500r002c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ngfw_module_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6300_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6300_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6300_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6600_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6600_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6600_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6800_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:nip6800_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c60:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r001c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:usg6000v_firmware:v500r003c00:*:*:*:*:*:*:*

More vulnerabilities in Huawei Ips Module Firmware

CVE-2020-9099 — Critical (CVSS 9.8): Huawei products IPS Module; NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6300; Secospace USG6500; Secospace…
CVE-2016-4576 — Critical (CVSS 9.8): Buffer overflow in the Application Specific Packet Filtering (ASPF) functionality in the Huawei IPS Module, NGFW…
CVE-2021-37129 — High (CVSS 7.5): There is an out of bounds write vulnerability in some Huawei products. The vulnerability is caused by a function of a…
CVE-2021-22320 — High (CVSS 7.5): There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly.…
CVE-2019-19417 — High (CVSS 7.5): The SIP module of some Huawei products have a denial of service (DoS) vulnerability. A remote attacker could exploit…
CVE-2019-19416 — High (CVSS 7.5): The SIP module of some Huawei products have a denial of service (DoS) vulnerability. A remote attacker could exploit…

All CVEs affecting Huawei Ips Module Firmware →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

Browse all CWE-125 (Out-of-bounds Read) vulnerabilities →