How severe is CVE-2019-5304?

CVE-2019-5304 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-2019-5304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5304?

CVE-2019-5304 primarily affects Huawei Ar120-s Firmware. In total, 120 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-5304?

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-2019-5304 published?

CVE-2019-5304 was published on 2020-01-03 and last updated on 2026-06-17.

CVE-2019-5304

CVE-2019-5304 is a high-severity vulnerability in Huawei Ar120-s 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Huawei Ar120-s Firmware
Published: 2020-01-03
Last modified: 2026-06-17

Description

Some Huawei products have a buffer error vulnerability. An unauthenticated, remote attacker could send specific MPLS Echo Request messages to the target products. Due to insufficient input validation of some parameters in the messages, successful exploit may cause the device to reset.

Frequently asked questions

What is CVE-2019-5304?: Some Huawei products have a buffer error vulnerability. An unauthenticated, remote attacker could send specific MPLS Echo Request messages to the target products. Due to insufficient input validation of some parameters in the messages, successful exploit may cause the device to reset.
How severe is CVE-2019-5304?: CVE-2019-5304 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-2019-5304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5304?: CVE-2019-5304 primarily affects Huawei Ar120-s Firmware. In total, 120 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-5304?: 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-2019-5304 published?: CVE-2019-5304 was published on 2020-01-03 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200102-01-buffer-en

Affected products (120)

cpe:2.3:o:huawei:ar120-s_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar120-s_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar120-s_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar120-s_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r003c01:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r003c01:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar1200-s_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r003c01:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r003c01:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar150-s_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar160_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar160_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar160_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar160_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar160_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r003c01:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r005c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r008c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200_firmware:v200r008c50:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar200-s_firmware:v200r003c01:*:*:*:*:*:*:*

More vulnerabilities in Huawei Ar120-s Firmware

CVE-2017-17301 — Critical (CVSS 9.8): Huawei AR120-S V200R005C32, V200R006C10, V200R007C00, V200R008C20, AR1200 V200R005C20, V200R005C32, V200R006C10,…
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…
CVE-2019-19415 — High (CVSS 7.5): The SIP module of some Huawei products have a denial of service (DoS) vulnerability. A remote attacker could exploit…
CVE-2019-5294 — High (CVSS 7.5): There is an out of bound read vulnerability in some Huawei products. A remote, unauthenticated attacker may send a…
CVE-2017-17258 — High (CVSS 7.5): Huawei AR120-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR1200 V200R006C10, V200R006C13, V200R007C00,…

All CVEs affecting Huawei Ar120-s Firmware →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →