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CVE-2018-13906

29
FAUCET Score

CVE-2018-13906 is a critical timing side-channel vulnerability affecting the HMAC authentication process in numerous Qualcomm Snapdragon products across various categories. This flaw allows an attacker to potentially forge application messages by analyzing timing differences during authentication. With a CVSS score of 9.1 (Critical), the vulnerability is network-exploitable with low attack complexity, posing a high risk to confidentiality and integrity. While there is no evidence of active exploitation or publicly available exploit code, the vulnerability has garnered significant community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:ipq4019_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:ipq8074_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:mdm9150_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:mdm9206_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:qualcomm:mdm9607_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
48.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 30th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

qualcomm.com / company/product-security/bulletins
Vendor Advisory