CVE-2021-30560

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

17.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 97.0% 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:N/UI:R/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

2021-08-03 00:00Z5 YR AGO

Last updated

2025-05-05 16:53Z1 YR AGO

Reserved

2021-04-13

Assigning CNA

Chrome

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

1ea01874234c514fdcdee9d364aa57ca04498f1dd7a824352b755d700d7cb0c3

• chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.html
• crbug.comhttps://crbug.com/1219209
• www.debian.orgDSA-5216https://www.debian.org/security/2022/dsa-5216vendor-advisory
• lists.debian.org[debian-lts-announce] 20220909 [SECURITY] [DLA 3101-1] libxslt security updatehttps://lists.debian.org/debian-lts-announce/2022/09/msg00010.htmlmailing-list
• security.gentoo.orgGLSA-202310-23https://security.gentoo.org/glsa/202310-23vendor-advisory