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CVE-2019-5303

19
FAUCET Score

CVE-2019-5303 describes two denial-of-service vulnerabilities in various Huawei smartphones. An attacker can exploit these by sending specially crafted TD-SCDMA messages from a rogue base station, leading to device abnormal behavior due to insufficient input validation. The vulnerability has a CVSS v3.1 score of 5.3 (Medium), indicating a network-adjacent attack vector with high impact on availability, but requiring high attack complexity. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, nor are there publicly available exploit codes in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.1.0.333\(c00e333r2p1t8\)CPE matchmatch criteria
cpe:2.3:o:huawei:alp-al00b_firmware:*:*:*:*:*:*:*:*
< 9.1.0.300\(c432e4r1p9t8\)CPE matchmatch criteria
cpe:2.3:o:huawei:alp-l09_firmware:*:*:*:*:*:*:*:*
< 9.1.0.315\(c636e5r1p13t8\)CPE matchmatch criteria
cpe:2.3:o:huawei:alp-l29_firmware:*:*:*:*:*:*:*:*
< 9.1.0.321\(c636e4r1p14t8\)CPE matchmatch criteria
cpe:2.3:o:huawei:bla-l29c_firmware:*:*:*:*:*:*:*:*
< 9.1.0.330\(c432e6r1p12t8\)CPE matchmatch criteria
cpe:2.3:o:huawei:bla-l29c_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 86th percentile among its peer group of 1,749 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

huawei.com / en/psirt/security-advisories/huawei-sa-20190814-01-mobile-en
Vendor Advisory