Cyber Resilience

CVE-2021-30560

High

Published: 03 August 2021

Published
03 August 2021
Modified
05 May 2025
KEV Added
—
Patch
—
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0008 24.5th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-30560 is a high-severity Use After Free (CWE-416) vulnerability in Splunk Universal Forwarder. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 24.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Use after free in Blink XSLT in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CWE(s)
CWE-416

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

google
chrome
≤ 91.0.4472.164
xmlsoft
libxslt
≤ 1.1.35
debian
debian linux
10.0, 11.0
splunk
universal forwarder
9.1.0 · 8.2.0 — 8.2.12 · 9.0.0 — 9.0.6

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References