How severe is CVE-2008-5849?

CVE-2008-5849 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-5849 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5849?

CVE-2008-5849 primarily affects Checkpoint Vpn-1. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5849?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-5849 published?

CVE-2008-5849 was published on 2009-01-06 and last updated on 2026-06-16.

CVE-2008-5849

CVE-2008-5849 is a medium-severity vulnerability in Checkpoint Vpn-1 with a CVSS 2.0 base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Checkpoint Vpn-1
Published: 2009-01-06
Last modified: 2026-06-16

Description

Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.

Frequently asked questions

What is CVE-2008-5849?: Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.
How severe is CVE-2008-5849?: CVE-2008-5849 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2008-5849 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5849?: CVE-2008-5849 primarily affects Checkpoint Vpn-1. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5849?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5849 published?: CVE-2008-5849 was published on 2009-01-06 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:checkpoint:vpn-1:r55:*:*:*:*:*:*:*
cpe:2.3:a:checkpoint:vpn-1:r65:*:*:*:*:*:*:*

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CVE-2004-0040 — Critical (CVSS 10.0): Stack-based buffer overflow in Check Point VPN-1 Server 4.1 through 4.1 SP6 and Check Point SecuRemote/SecureClient 4.1…
CVE-2011-1827 — Critical (CVSS 9.3): Multiple unspecified vulnerabilities in Check Point SSL Network Extender (SNX), SecureWorkSpace, and Endpoint Security…
CVE-2005-3673 — High (CVSS 7.8): The Internet Key Exchange version 1 (IKEv1) implementation in Check Point products allows remote attackers to cause a…
CVE-2004-0079 — High (CVSS 7.5): The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause…
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