Is CVE-2016-4429 in the CISA KEV catalog?

No. CVE-2016-4429 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-4429?

CVE-2016-4429 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2016-4429?

CVE-2016-4429 has an EPSS score of 3.92% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-4429?

Upgrade glibc on debian 11 to 2.22-10 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2016-4429

MEDIUMEPSS 89th pctl

5.9

CVSS v3

NVD

Description

Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote servers to cause a denial of service (crash) or possibly unspecified other impact via a flood of crafted ICMP and UDP packets.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

glibcDebian

Fixed in:2.22-10CVE-2016-4429

eglibcUbuntu

Fixed in:2.19-0ubuntu6.10USN-3239-1

glibcUbuntu

Fixed in:2.23-0ubuntu6USN-3239-1

libc6Ubuntu

Fixed in:2.19-0ubuntu6.10USN-3239-1

Fixed in:2.23-0ubuntu6USN-3239-1

libtirpcUbuntu

Fixed in:0.2.2-5ubuntu2.1USN-3759-1

Fixed in:0.2.5-1ubuntu0.1USN-3759-1

Fixed in:0.2.5-1.2ubuntu0.1USN-3759-1

libtirpc-devUbuntu

Fixed in:0.2.2-5ubuntu2.1USN-3759-1

Fixed in:0.2.5-1ubuntu0.1USN-3759-1

Fixed in:0.2.5-1.2ubuntu0.1USN-3759-1

libtirpc1Ubuntu

Fixed in:0.2.2-5ubuntu2.1USN-3759-1

Fixed in:0.2.5-1ubuntu0.1USN-3759-1

Fixed in:0.2.5-1.2ubuntu0.1USN-3759-1

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 VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.92%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

sourceware.org

Third-Party Advisory6

Other references4

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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 2026-05-06.