CVE-2002-2338

Exp

The POP3 mail client in Mozilla 1.0 and earlier, and Netscape Communicator 4.7 and earlier, allows remote attackers to cause a denial of service (no new mail) via a mail message containing a dot (.) at a newline, which is interpreted as the end of the message.

Published: 2002-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-2338 is rated High Exploit Risk (61.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.54%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2002-2338

EDB-ID Source Kind Published Link
21539 exploit_db edb 2002-06-12 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2002-2338

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 7.42% 3.54% -3.88%
2 2025-08-21 5.29% 7.42% +2.13%
3 2025-03-30 — 5.29% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-2338

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2002-2338

Affected software / configurations for CVE-2002-2338

Vendor Product Version Raw CPE
mozilla mozilla 0.9.2 cpe:2.3:a:mozilla:mozilla:0.9.2:*:*:*:*:*:*:*
mozilla mozilla 0.9.2.1 cpe:2.3:a:mozilla:mozilla:0.9.2.1:*:*:*:*:*:*:*
mozilla mozilla 0.9.3 cpe:2.3:a:mozilla:mozilla:0.9.3:*:*:*:*:*:*:*
mozilla mozilla 0.9.4 cpe:2.3:a:mozilla:mozilla:0.9.4:*:*:*:*:*:*:*
mozilla mozilla 0.9.4.1 cpe:2.3:a:mozilla:mozilla:0.9.4.1:*:*:*:*:*:*:*
mozilla mozilla 0.9.5 cpe:2.3:a:mozilla:mozilla:0.9.5:*:*:*:*:*:*:*
mozilla mozilla 0.9.6 cpe:2.3:a:mozilla:mozilla:0.9.6:*:*:*:*:*:*:*
mozilla mozilla 0.9.7 cpe:2.3:a:mozilla:mozilla:0.9.7:*:*:*:*:*:*:*
mozilla mozilla 0.9.8 cpe:2.3:a:mozilla:mozilla:0.9.8:*:*:*:*:*:*:*
mozilla mozilla 0.9.9 cpe:2.3:a:mozilla:mozilla:0.9.9:*:*:*:*:*:*:*
mozilla mozilla 1.0 cpe:2.3:a:mozilla:mozilla:1.0:*:*:*:*:*:*:*
mozilla mozilla 1.0 cpe:2.3:a:mozilla:mozilla:1.0:rc1:*:*:*:*:*:*
mozilla mozilla 1.0 cpe:2.3:a:mozilla:mozilla:1.0:rc2:*:*:*:*:*:*
netscape communicator 4.0 cpe:2.3:a:netscape:communicator:4.0:*:*:*:*:*:*:*
netscape communicator 4.4 cpe:2.3:a:netscape:communicator:4.4:*:*:*:*:*:*:*
netscape communicator 4.5 cpe:2.3:a:netscape:communicator:4.5:*:*:*:*:*:*:*
netscape communicator 4.06 cpe:2.3:a:netscape:communicator:4.06:*:*:*:*:*:*:*
netscape communicator 4.6 cpe:2.3:a:netscape:communicator:4.6:*:*:*:*:*:*:*
netscape communicator 4.07 cpe:2.3:a:netscape:communicator:4.07:*:*:*:*:*:*:*
netscape communicator 4.7 cpe:2.3:a:netscape:communicator:4.7:*:*:*:*:*:*:*
netscape communicator 4.08 cpe:2.3:a:netscape:communicator:4.08:*:*:*:*:*:*:*
netscape communicator 4.51 cpe:2.3:a:netscape:communicator:4.51:*:*:*:*:*:*:*
netscape communicator 4.61 cpe:2.3:a:netscape:communicator:4.61:*:*:*:*:*:*:*
netscape communicator 4.72 cpe:2.3:a:netscape:communicator:4.72:*:*:*:*:*:*:*
netscape communicator 4.73 cpe:2.3:a:netscape:communicator:4.73:*:*:*:*:*:*:*
netscape communicator 4.74 cpe:2.3:a:netscape:communicator:4.74:*:*:*:*:*:*:*
netscape communicator 4.75 cpe:2.3:a:netscape:communicator:4.75:*:*:*:*:*:*:*
netscape communicator 4.76 cpe:2.3:a:netscape:communicator:4.76:*:*:*:*:*:*:*
netscape communicator 4.77 cpe:2.3:a:netscape:communicator:4.77:*:*:*:*:*:*:*
netscape navigator 6.0 cpe:2.3:a:netscape:navigator:6.0:*:*:*:*:*:*:*
netscape navigator 6.0 cpe:2.3:a:netscape:navigator:6.0:*:mac:*:*:*:*:*
netscape navigator 6.01 cpe:2.3:a:netscape:navigator:6.01:*:*:*:*:*:*:*
netscape navigator 6.1 cpe:2.3:a:netscape:navigator:6.1:*:*:*:*:*:*:*
netscape navigator 6.2 cpe:2.3:a:netscape:navigator:6.2:*:*:*:*:*:*:*
netscape navigator 6.2.1 cpe:2.3:a:netscape:navigator:6.2.1:*:*:*:*:*:*:*
netscape navigator 6.2.2 cpe:2.3:a:netscape:navigator:6.2.2:*:*:*:*:*:*:*

References for CVE-2002-2338

cvelogic Threat Intelligence