Is CVE-2021-36411 in the CISA KEV catalog?

No. CVE-2021-36411 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-36411?

CVE-2021-36411 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-36411?

CVE-2021-36411 has an EPSS score of 1.16% (63th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-36411?

Upgrade libde265 on debian 11 to 1.0.11-0+deb11u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-36411

MEDIUM

5.5

CVSS v3

NVD

Description

An issue has been found in libde265 v1.0.8 due to incorrect access control. A SEGV caused by a READ memory access in function derive_boundaryStrength of deblock.cc has occurred. The vulnerability causes a segmentation fault and application crash, which leads to remote denial of service.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

libde265Debian

Fixed in:1.0.11-0+deb11u1CVE-2021-36411

Fixed in:1.0.8-1.1CVE-2021-36411

libde265Ubuntu

Fixed in:1.0.2-2ubuntu0.16.04.1~esm2USN-6627-1

Fixed in:1.0.2-2ubuntu0.18.04.1~esm2USN-6627-1

Fixed in:1.0.4-1ubuntu0.2USN-6627-1

Fixed in:1.0.8-1ubuntu0.1USN-6627-1

libde265-0Ubuntu

Fixed in:1.0.2-2ubuntu0.16.04.1~esm2USN-6627-1

Fixed in:1.0.2-2ubuntu0.18.04.1~esm2USN-6627-1

Fixed in:1.0.4-1ubuntu0.2USN-6627-1

Fixed in:1.0.8-1ubuntu0.1USN-6627-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.16%probability of exploitation in 30 days

63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Exploit1

github.com

Issue Tracking2

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.