CVE-2002-2438

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-04-21. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 7.5Exploit: None knownExposed: 0

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

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity75% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

May 18, 2021

Last Modified

November 20, 2024

Advisory Details (10)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/31/3
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/9
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/8
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/4
generic

oss-security - CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/2
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/13
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/12
generic

oss-security - Re: CVE Request -- kernel: tcp: drop SYN+FIN messages

http://www.openwall.com/lists/oss-security/2012/05/30/11
generic

oss-security - Re: CVE Request (2002): Linux TCP stack could accept invalid TCP flag combinations

http://www.openwall.com/lists/oss-security/2012/05/29/8
generic

oss-security - Re: CVE Request (2002): Linux TCP stack could accept invalid TCP flag combinations

http://www.openwall.com/lists/oss-security/2012/02/03/7

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 22× 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. 2026-07-25 14:11 UTCEPSS rescore
  2. 2026-07-24 14:11 UTCEPSS rescore
  3. 2026-07-23 00:45 UTCEG score recompute
  4. 2026-07-23 00:26 UTCEG score recompute
  5. 2026-07-22 23:49 UTCEG score recompute
  6. 2026-07-22 21:29 UTCEG score recompute
  7. 2026-07-20 17:02 UTCEPSS rescore
  8. 2026-07-19 14:25 UTCEPSS rescore
  9. 2026-07-18 09:59 UTCEPSS rescore
  10. 2026-07-18 09:59 UTCEPSS rescore
  11. 2026-07-16 16:58 UTCEPSS rescore
  12. 2026-07-15 01:55 UTCEPSS rescore
  13. 2026-07-15 01:55 UTCEPSS rescore
  14. 2026-07-13 06:07 UTCEPSS rescore
  15. 2026-07-11 08:22 UTCEPSS rescore
  16. 2026-07-11 08:22 UTCEPSS rescore
  17. 2026-07-08 15:09 UTCEPSS rescore
  18. 2026-07-06 02:19 UTCEPSS rescore
  19. 2026-07-04 06:26 UTCEPSS rescore
  20. 2026-07-02 14:00 UTCEPSS rescore
  21. 2026-06-28 14:02 UTCEPSS rescore
  22. 2026-06-28 04:52 UTCEPSS rescore
  23. 2026-06-27 03:04 UTCEPSS rescore
  24. 2026-06-23 21:29 UTCEPSS rescore
  25. 2026-06-22 14:22 UTCEPSS rescore
Show 41 more
  1. 2026-06-21 14:52 UTCEPSS rescore
  2. 2026-06-21 01:56 UTCEPSS rescore
  3. 2026-06-18 17:49 UTCEPSS rescore
  4. 2026-06-18 17:49 UTCEPSS rescore
  5. 2026-06-17 17:49 UTCEPSS rescore
  6. 2026-06-17 17:49 UTCEPSS rescore
  7. 2026-06-16 17:49 UTCEPSS rescore
  8. 2026-06-16 17:49 UTCEPSS rescore
  9. 2026-06-15 17:43 UTCEPSS rescore
  10. 2026-06-13 22:56 UTCEPSS rescore
  11. 2026-06-12 23:08 UTCEPSS rescore
  12. 2026-06-11 13:55 UTCEPSS rescore
  13. 2026-06-10 22:13 UTCEPSS rescore
  14. 2026-06-10 13:17 UTCEPSS rescore
  15. 2026-06-07 15:21 UTCEPSS rescore
  16. 2026-06-06 13:44 UTCEPSS rescore
  17. 2026-06-06 13:44 UTCEPSS rescore
  18. 2026-06-06 13:44 UTCEPSS rescore
  19. 2026-06-05 22:43 UTCEPSS rescore
  20. 2026-06-05 22:43 UTCEPSS rescore
  21. 2026-06-05 06:07 UTCEPSS rescore
  22. 2026-06-04 13:09 UTCEPSS rescore
  23. 2026-06-02 20:10 UTCEPSS rescore
  24. 2026-06-01 13:49 UTCEPSS rescore
  25. 2026-06-01 13:49 UTCEPSS rescore
  26. 2026-05-31 22:28 UTCEPSS rescore
  27. 2026-05-31 00:13 UTCEPSS rescore
  28. 2026-05-31 00:13 UTCEPSS rescore
  29. 2026-05-29 13:40 UTCEPSS rescore
  30. 2026-05-29 13:40 UTCEPSS rescore
  31. 2026-05-28 13:42 UTCEPSS rescore
  32. 2026-05-28 13:42 UTCEPSS rescore
  33. 2026-05-28 13:42 UTCEPSS rescore
  34. 2026-05-27 13:37 UTCEPSS rescore
  35. 2026-05-26 16:27 UTCEG score recompute
  36. 2026-05-26 16:27 UTCGHSA enrichment
  37. 2026-05-26 13:41 UTCEPSS rescore
  38. 2026-05-26 13:41 UTCEPSS rescore
  39. 2026-05-26 07:16 UTCEPSS rescore
  40. 2026-05-26 07:16 UTCEPSS rescore
  41. 2026-05-24 16:42 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2002-2438?
CVE-2002-2438 is a high vulnerability published on May 18, 2021. TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.
When was CVE-2002-2438 disclosed?
CVE-2002-2438 was first published in the National Vulnerability Database on May 18, 2021, with the most recent update on November 20, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2002-2438 actively exploited?
CVE-2002-2438 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 11.3% of all scored CVEs.
What is the CVSS score of CVE-2002-2438?
CVE-2002-2438 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2002-2438?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-2438, 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.

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