CVE-2002-2338

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 3.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS v2: 5.0Exploit: Exploit-DB (verified) · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
53(Track)
EG Risk 53/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity50% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

December 31, 2002

Last Modified

June 16, 2026

References (14)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 13:22 UTCEG score recompute▲ 5.00
  2. 2026-07-25 14:11 UTCEPSS rescore
  3. 2026-07-24 14:11 UTCEPSS rescore
  4. 2026-07-23 00:45 UTCEG score recompute
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  8. 2026-07-20 17:02 UTCEPSS rescore
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  1. 2026-06-27 03:04 UTCEPSS rescore
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  31. 2026-06-01 13:49 UTCEPSS rescore
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  33. 2026-05-31 22:28 UTCEPSS rescore
  34. 2026-05-31 18:21 UTCEG score recompute
  35. 2026-05-31 18:21 UTCGHSA enrichment
  36. 2026-05-31 00:13 UTCEPSS rescore
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  43. 2026-05-27 13:37 UTCEPSS rescore
  44. 2026-05-26 13:41 UTCEPSS rescore
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  48. 2026-05-24 16:42 UTCEPSS rescore
  49. 2026-05-22 21:15 UTCEPSS rescore
  50. 2026-05-20 22:36 UTCEPSS rescore
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  53. 2026-05-18 21:29 UTCEPSS rescore
  54. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-21539✓ verified
    First seen Jun 12, 2002

    Netscape 4.x/6.x / Mozilla 0.9.x - Malformed Email POP3 Denial of Service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2002-2338?
CVE-2002-2338 is a medium vulnerability published on December 31, 2002. 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.
When was CVE-2002-2338 disclosed?
CVE-2002-2338 was first published in the National Vulnerability Database on December 31, 2002, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2002-2338 actively exploited?
CVE-2002-2338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 10.9% of all scored CVEs.
How do I remediate CVE-2002-2338?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-2338, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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