PatchTheCVECVE-2021-43171: Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge befor
CVE-2021-43171 is a medium-severity flaw (CVSS 6.5) affecting app lounge. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 65%) |
| CISA exploited list | No |
| Weakness | CWE-347 |
| Published | 2023-08-22 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-43171?
app lounge: upgrade to 0.19q. Exact commands for each OS are on this page.
Is CVE-2021-43171 being exploited?
CVE-2021-43171 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-43171 affect?
CVE-2021-43171 affects app lounge. Severity is medium (CVSS 6.5). Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the
How urgent is CVE-2021-43171?
Priority 31/100. No elevated risk signals yet.