Is CVE-2016-9841 in the CISA KEV catalog?

No. CVE-2016-9841 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-9841?

CVE-2016-9841 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2016-9841?

CVE-2016-9841 has an EPSS score of 7.49% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-9841?

Upgrade rsync on debian 11 to 3.1.3-6 or later. Fixes are available for 12 affected products.

CVE & CISA-KEV Catalog

CVE-2016-9841

CRITICALEPSS 94th pctl

9.8

CVSS v3

NVD

Description

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

How to fix

Remediation Available

rsyncDebian

Fixed in:3.1.3-6CVE-2016-9841

klibcUbuntu

Fixed in:2.0.3-0ubuntu1.14.04.3+esm3USN-6736-1

Fixed in:2.0.4-8ubuntu1.16.04.4+esm2USN-6736-1

Fixed in:2.0.4-9ubuntu2.2+esm1USN-6736-1

Fixed in:2.0.7-1ubuntu5.2USN-6736-1

Fixed in:2.0.10-4ubuntu0.1USN-6736-1

Fixed in:2.0.13-1ubuntu0.1USN-6736-1

Fixed in:2.0.13-4ubuntu0.1USN-6736-2

klibc-utilsUbuntu

Fixed in:2.0.3-0ubuntu1.14.04.3+esm3USN-6736-1

Fixed in:2.0.4-8ubuntu1.16.04.4+esm2USN-6736-1

Fixed in:2.0.4-9ubuntu2.2+esm1USN-6736-1

Fixed in:2.0.7-1ubuntu5.2USN-6736-1

Fixed in:2.0.10-4ubuntu0.1USN-6736-1

Fixed in:2.0.13-1ubuntu0.1USN-6736-1

Fixed in:2.0.13-4ubuntu0.1USN-6736-2

lib32z1Ubuntu

Fixed in:1:1.2.8.dfsg-2ubuntu4.3USN-4246-1

lib64z1Ubuntu

Fixed in:1:1.2.8.dfsg-2ubuntu4.3USN-4246-1

libklibcUbuntu

Fixed in:2.0.3-0ubuntu1.14.04.3+esm3USN-6736-1

Fixed in:2.0.4-8ubuntu1.16.04.4+esm2USN-6736-1

Fixed in:2.0.4-9ubuntu2.2+esm1USN-6736-1

Fixed in:2.0.7-1ubuntu5.2USN-6736-1

Fixed in:2.0.10-4ubuntu0.1USN-6736-1

Fixed in:2.0.13-1ubuntu0.1USN-6736-1

Fixed in:2.0.13-4ubuntu0.1USN-6736-2

libx32z1Ubuntu

Fixed in:1:1.2.8.dfsg-2ubuntu4.3USN-4246-1

rsyncUbuntu

Fixed in:3.1.1-3ubuntu1.3USN-4292-1

Fixed in:3.1.2-2.1ubuntu1.1USN-4292-1

zlibUbuntu

Fixed in:1:1.2.8.dfsg-2ubuntu4.3USN-4246-1

zlib1gUbuntu

Fixed in:1:1.2.8.dfsg-2ubuntu4.3USN-4246-1

Node.jsWindows application

Affected:7.0.0 7.6.0Fixed in:7.6.0Node.js Foundation

Affected:6.9.0 6.10.2Fixed in:6.10.2Node.js Foundation

Affected:4.2.0 4.8.2Fixed in:4.8.2Node.js Foundation

Node.js (LTS)Windows application

Affected:7.0.0 7.6.0Fixed in:7.6.0Node.js Foundation

Affected:4.2.0 4.8.2Fixed in:4.8.2Node.js Foundation

Affected:6.9.0 6.10.2Fixed in:6.10.2Node.js Foundation

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

7.49%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

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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 2026-05-13.