Is CVE-2008-4309 in the CISA KEV catalog?

No. CVE-2008-4309 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-4309?

CVE-2008-4309 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2008-4309?

CVE-2008-4309 has an EPSS score of 4.93% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-4309?

Upgrade net-snmp on debian 11 to 5.4.1~dfsg-11 or later.

CVE & CISA-KEV Catalog

CVE-2008-4309

HIGHEPSS 91th pctl

7.5

CVSS v3

NVD

Description

Integer overflow in the netsnmp_create_subtree_cache function in agent/snmp_agent.c in net-snmp 5.4 before 5.4.2.1, 5.3 before 5.3.2.3, and 5.2 before 5.2.5.1 allows remote attackers to cause a denial of service (crash) via a crafted SNMP GETBULK request, which triggers a heap-based buffer overflow, related to the number of responses or repeats.

CWE-20Improper Input Validation CWE-190Integer Overflow

How to fix

Remediation Available

net-snmpDebian

Fixed in:5.4.1~dfsg-11CVE-2008-4309

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.93%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	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 2026-05-28.