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Fencer Vulns
high 8.8

CVE-2021-36981 json

In the server in SerNet verinice before 1.22.2, insecure Java deserialization allows remote authenticated attackers to execute arbitrary co…

published 2021-08-31 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23557

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

In the server in SerNet verinice before 1.22.2, insecure Java deserialization allows remote authenticated attackers to execute arbitrary code.

Patch / fix

  • sernet verinice 1.22.2

Exploit prediction

6.05% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/0xBrAinsTorM/CVE-2021-36981 referenced PoC, tagged "exploit" by a source, unverified
  • secianus.de https://www.secianus.de/worum-geht-es/aktuelle-meldung/cve-2021-36981-verinicepro-unsafe-java-deserialization referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.