CVE-2021-39321

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.04% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.0% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-10-21 19:38Z5 YR AGO

Last updated

2025-03-31 17:58Z1 YR AGO

Reserved

2021-08-20

Assigning CNA

Wordfence

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-502Deserialization of Untrusted DataBase
• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

7824ef1f11543d2f0104417d2efc0502648efda7c140834b090c0b51fe84a2d7

• www.wordfence.comhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321x_refsource_MISC
• www.wordfence.comhttps://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/x_refsource_MISC
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.phpx_refsource_MISC