CVE-2021-27335

KollectApps before 4.8.16c is affected by insecure Java deserialization, leading to Remote Code Execution via a ysoserial.payloads.CommonsCollections parameter.

CVSS v3.1

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

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

3.00% chance of exploitation in the next 30 days, 86th percentile

Published

2021-02-18

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization/

References

• CVE Record
• NVD entry

Related

• CVE-2021-27330
• CVE-2021-27338
• CVE-2021-27328
• CVE-2021-27342
• CVE-2021-27320
• CVE-2021-27345