What is CVE-2021-32568?

CVE-2021-32568 is a high-severity vulnerability in Mrdoc, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2021-09-06.

How severe is CVE-2021-32568?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-32568 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Mrdoc

CVE-2021-32568

mrdoc is vulnerable to Deserialization of Untrusted Data

Vulnerability class: Insecure Deserialization

Published 2021-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.1th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Mrdoc
Zmister2016 Zmister2016/mrdoc — versions unspecified

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

b1nslashsh/CVE

References

huntr.dev/bounties/04fc04b3-2dc1-4cad-a090-e403cd66b5ad (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/zmister2016/mrdoc/commit/bb49e1287700b4e7681eab544c61093821ce72f6 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-32568?: CVE-2021-32568 is a high-severity vulnerability in Mrdoc, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2021-09-06.
How severe is CVE-2021-32568?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-32568 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.