CVE-1999-0770

lowpriority · track · 18EPSS 0.011 · 65 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

1.07% (65th) EPSS

CVSS 2.1 · low

Is it mine?

3 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-28

Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.

cvss

Technical severity, 0–10. One row per scoring source.

2.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.02.1lowAV:L/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v2.01.9lowAV:L/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USLLM-inferredCWE-400USLLM-inferred

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-19436Check Point Software Firewall-1 3.0/1 4.0 - Table Saturation Denial of Servicefunctional · exploit_db

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
checkpoint firewall-1= 3.0nvdUScpe:2.3:a:checkpoint:firewall-1:*:*:*:*:*:*:*:*
checkpoint firewall-1= 4.0nvdUScpe:2.3:a:checkpoint:firewall-1:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 1999-07-29modified 2026-06-16

references (4)

External citations — patches, advisories, analysis.

http://www.osvdb.org/1027 enisa_euvd
http://www.securityfocus.com/bid/549 enisa_euvd
http://www.osvdb.org/1027 nvd
http://www.securityfocus.com/bid/549ExploitPatchVendor Advisorynvd

scry

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