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CVE-2019-18990

20
FAUCET Score

CVE-2019-18990 is a partial authentication bypass vulnerability affecting Realtek RTL8812AR, RTL8196D, RTL8192ER, and RTL8881AN devices. This medium-severity vulnerability (CVSS 5.4) allows an attacker on the adjacent network to send unencrypted data to a WPA2-protected WLAN router, potentially discerning information or modifying data through encrypted responses. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
1.21wwCPE matchmatch criteria
cpe:2.3:o:realtek:rtl8812ar_firmware:1.21ww:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:o:realtek:rtl8196d_firmware:1.0.0:*:*:*:*:*:*:*
2.10CPE matchmatch criteria
cpe:2.3:o:realtek:rtl8192er_firmware:2.10:*:*:*:*:*:*:*
1.09CPE matchmatch criteria
cpe:2.3:o:realtek:rtl8881an_firmware:1.09:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0075 is in the 81st percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Media Mentions

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

synopsys.com / blogs/software-security/cyrc-advisory-sept2020
Third Party Advisory