CVE-2008-5849

5.0 MEDIUM 2% exploit odds No fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 1.6% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2009-01-06 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:01 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.6% in the next 30 days (EPSS).
Severity: 5.0 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2009-01-06 17:30 UTC
Last modified: 2026-06-16 23:01 UTC
Exploit probability: 1.6% · EPSS, next 30 days
Weakness: CWE-200 · Information exposure
Record status: Modified

Affected

Checkpoint vpn-1 r55
Checkpoint vpn-1 r65

Attack profile CVSS 2.0 · 5.0

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: None
Availability: None

Raw vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Is it in your code?

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References

NVD record · CVE.org record