How severe is CVE-2008-4999?

CVE-2008-4999 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2008-4999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4999?

CVE-2008-4999 affects Nortel Unistim Ip Phone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4999?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-4999 published?

CVE-2008-4999 was published on 2008-11-07 and last updated on 2026-06-16.

CVE-2008-4999

CVE-2008-4999 is a high-severity vulnerability in Nortel Unistim Ip Phone with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Nortel Unistim Ip Phone
Published: 2008-11-07
Last modified: 2026-06-16

Description

Nortel Networks UNIStim IP Phone 0604DAS allows remote attackers to cause a denial of service (crash) via a long ping packet ("ping of death"). NOTE: this issue could not be reproduced by a third party, who tested it on 0604DAD. In addition, the original researcher was not able to reliably reproduce the issue.

Frequently asked questions

What is CVE-2008-4999?: Nortel Networks UNIStim IP Phone 0604DAS allows remote attackers to cause a denial of service (crash) via a long ping packet ("ping of death"). NOTE: this issue could not be reproduced by a third party, who tested it on 0604DAD. In addition, the original researcher was not able to reliably reproduce the issue.
How severe is CVE-2008-4999?: CVE-2008-4999 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2008-4999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4999?: CVE-2008-4999 affects Nortel Unistim Ip Phone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-4999 published?: CVE-2008-4999 was published on 2008-11-07 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:h:nortel:unistim_ip_phone:0604das:*:*:*:*:*:*:*

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