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CVE-2019-18624

30
FAUCET Score

CVE-2019-18624 is a critical vulnerability affecting Opera Mini for Android versions 44.1.2254.142553, 44.1.2254.142659, and 44.1.2254.143214. This flaw allows attackers to bypass intended restrictions on .apk file downloads and installations using a Right-to-Left Override (RTLO) technique, tricking users into installing malicious applications. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
44.1.2254.142553CPE matchmatch criteria
cpe:2.3:a:opera:mini:44.1.2254.142553:*:*:*:*:android:*:*
44.1.2254.142659CPE matchmatch criteria
cpe:2.3:a:opera:mini:44.1.2254.142659:*:*:*:*:android:*:*
44.1.2254.143214CPE matchmatch criteria
cpe:2.3:a:opera:mini:44.1.2254.143214:*:*:*:*:android:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 57th percentile among its peer group of 36,829 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

firstsight.me / 2019/10/illegal-rendered-at-download-feature-in-several-apps-including-opera-mini-that-lead-to-extension-manipulation-with-rtlo
ExploitThird Party Advisory
medium.com / %40YoKoKho/illegal-rendered-at-download-feature-in-opera-mini-that-lead-to-extension-manipulation-with-rtlo-685bf2d77d51