CVE-2002-1816

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-04-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 9%CVSS: 9.8Exploit: NoneExposed: 0

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

Off-by-one buffer overflow in the sock_gets function in sockhelp.c for ATPhttpd 0.4b and earlier allows remote attackers to execute arbitrary code via a long HTTP GET request.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.6%
KEV
Not listed

Published

December 31, 2002

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
No patch confirmed yet.
generic
http://www.securityfocus.com/bid/5956
generic

About Secunia Research | Flexera

http://secunia.com/advisories/7293

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× 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. 2026-07-04 06:26 UTCEPSS rescore
  2. 2026-07-02 14:00 UTCEPSS rescore
  3. 2026-06-29 14:02 UTCEPSS rescore
  4. 2026-06-29 14:02 UTCEPSS rescore
  5. 2026-06-28 04:52 UTCEPSS rescore
  6. 2026-06-27 03:04 UTCEPSS rescore
  7. 2026-06-23 21:29 UTCEPSS rescore
  8. 2026-06-22 14:22 UTCEPSS rescore
  9. 2026-06-21 14:52 UTCEPSS rescore
  10. 2026-06-18 17:49 UTCEPSS rescore
  11. 2026-06-18 17:49 UTCEPSS rescore
  12. 2026-06-17 17:49 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-16 17:49 UTCEPSS rescore
  15. 2026-06-16 17:49 UTCEPSS rescore
  16. 2026-06-15 17:43 UTCEPSS rescore
  17. 2026-06-14 23:13 UTCEPSS rescore
  18. 2026-06-14 23:13 UTCEPSS rescore
  19. 2026-06-13 22:56 UTCEPSS rescore
  20. 2026-06-12 23:08 UTCEPSS rescore
  21. 2026-06-11 13:55 UTCEPSS rescore
  22. 2026-06-10 22:13 UTCEPSS rescore
  23. 2026-06-10 13:17 UTCEPSS rescore
  24. 2026-06-08 14:13 UTCEPSS rescore
  25. 2026-06-07 15:21 UTCEPSS rescore
Show 43 more
  1. 2026-06-05 22:43 UTCEPSS rescore
  2. 2026-06-05 22:43 UTCEPSS rescore
  3. 2026-06-05 06:07 UTCEPSS rescore
  4. 2026-06-04 13:09 UTCEPSS rescore
  5. 2026-06-02 20:10 UTCEPSS rescore
  6. 2026-06-01 13:49 UTCEPSS rescore
  7. 2026-06-01 13:49 UTCEPSS rescore
  8. 2026-05-31 22:28 UTCEPSS rescore
  9. 2026-05-31 00:13 UTCEPSS rescore
  10. 2026-05-31 00:13 UTCEPSS rescore
  11. 2026-05-29 13:40 UTCEPSS rescore
  12. 2026-05-29 13:40 UTCEPSS rescore
  13. 2026-05-28 13:42 UTCEPSS rescore
  14. 2026-05-28 13:42 UTCEPSS rescore
  15. 2026-05-28 13:42 UTCEPSS rescore
  16. 2026-05-27 13:37 UTCEPSS rescore
  17. 2026-05-26 13:41 UTCEPSS rescore
  18. 2026-05-26 13:41 UTCEPSS rescore
  19. 2026-05-26 07:16 UTCEPSS rescore
  20. 2026-05-26 07:16 UTCEPSS rescore
  21. 2026-05-24 16:42 UTCEPSS rescore
  22. 2026-05-22 21:15 UTCEPSS rescore
  23. 2026-05-20 22:36 UTCEPSS rescore
  24. 2026-05-20 11:20 UTCEPSS rescore
  25. 2026-05-20 11:20 UTCEPSS rescore
  26. 2026-05-20 07:30 UTCEG score recompute
  27. 2026-05-20 07:30 UTCGHSA enrichment
  28. 2026-05-20 03:34 UTCEG score recompute
  29. 2026-05-20 03:34 UTCGHSA enrichment
  30. 2026-05-19 23:10 UTCEG score recompute
  31. 2026-05-19 23:10 UTCGHSA enrichment
  32. 2026-05-19 19:11 UTCEG score recompute
  33. 2026-05-19 19:11 UTCGHSA enrichment
  34. 2026-05-19 14:54 UTCEG score recompute
  35. 2026-05-19 14:54 UTCGHSA enrichment
  36. 2026-05-19 10:39 UTCEG score recompute
  37. 2026-05-19 10:39 UTCGHSA enrichment
  38. 2026-05-19 05:54 UTCEG score recompute
  39. 2026-05-19 05:54 UTCGHSA enrichment
  40. 2026-05-19 02:00 UTCEG score recompute
  41. 2026-05-19 02:00 UTCGHSA enrichment
  42. 2026-05-18 21:29 UTCEPSS rescore
  43. 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-21936✓ verified
    First seen Oct 5, 2002

    ATP HTTPd 0.4 - Single Byte Buffer Overflow

    Open source ↗

Frequently asked(5)

What is CVE-2002-1816?
CVE-2002-1816 is a critical vulnerability published on December 31, 2002. Off-by-one buffer overflow in the sock_gets function in sockhelp.c for ATPhttpd 0.4b and earlier allows remote attackers to execute arbitrary code via a long HTTP GET request.
When was CVE-2002-1816 disclosed?
CVE-2002-1816 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-2002-1816 actively exploited?
CVE-2002-1816 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2002-1816?
CVE-2002-1816 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2002-1816?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-1816, 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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