CVE-2002-0083

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 17% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, 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: 15%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
96.3%
KEV
Not listed

Published

March 15, 2002

Last Modified

June 16, 2026

Advisory Details (3)

Auto-updated Jun 23, 2026
No patch confirmed yet.
generic

'[OpenPKG-SA-2002.002] OpenPKG Security Advisory (openssh)' - MARC

http://marc.info/?l=bugtraq&m=101561384821761&w=2
generic

'OpenSSH Security Advisory (adv.channelalloc)' - MARC

http://marc.info/?l=bugtraq&m=101553908201861&w=2
generic

'[PINE-CERT-20020301] OpenSSH off-by-one' - MARC

http://marc.info/?l=bugtraq&m=101552065005254&w=2

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpatch2002-03-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 3× in last 7d / 14× 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. 2026-07-20 17:02 UTCEPSS rescore
  2. 2026-07-18 09:59 UTCEPSS rescore
  3. 2026-07-16 16:58 UTCEPSS rescore
  4. 2026-07-15 16:53 UTCEPSS rescore
  5. 2026-07-15 01:55 UTCEPSS rescore
  6. 2026-07-11 08:22 UTCEPSS rescore
  7. 2026-07-08 15:08 UTCEPSS rescore
  8. 2026-07-04 06:26 UTCEPSS rescore
  9. 2026-07-02 14:00 UTCEPSS rescore
  10. 2026-06-29 14:02 UTCEPSS rescore
  11. 2026-06-28 14:02 UTCEPSS rescore
  12. 2026-06-27 03:04 UTCEPSS rescore
  13. 2026-06-24 14:01 UTCEPSS rescore
  14. 2026-06-23 21:29 UTCEPSS rescore
  15. 2026-06-22 14:22 UTCEPSS rescore
  16. 2026-06-21 01:56 UTCEPSS rescore
  17. 2026-06-19 19:22 UTCEPSS rescore
  18. 2026-06-18 17:49 UTCEPSS rescore
  19. 2026-06-18 17:49 UTCEPSS rescore
  20. 2026-06-17 17:49 UTCEPSS rescore
  21. 2026-06-16 17:49 UTCEPSS rescore
  22. 2026-06-14 23:13 UTCEPSS rescore
  23. 2026-06-13 22:56 UTCEPSS rescore
  24. 2026-06-12 23:07 UTCEPSS rescore
  25. 2026-06-11 13:55 UTCEPSS rescore
Show 46 more
  1. 2026-06-10 22:13 UTCEPSS rescore
  2. 2026-06-10 13:17 UTCEPSS rescore
  3. 2026-06-08 14:13 UTCEPSS rescore
  4. 2026-06-07 15:21 UTCEPSS rescore
  5. 2026-06-05 06:07 UTCEPSS rescore
  6. 2026-06-04 13:09 UTCEPSS rescore
  7. 2026-06-02 20:10 UTCEPSS rescore
  8. 2026-06-01 13:48 UTCEPSS rescore
  9. 2026-05-31 22:27 UTCEPSS rescore
  10. 2026-05-31 00:13 UTCEPSS rescore
  11. 2026-05-31 00:13 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. 2026-05-28 13:42 UTCEPSS rescore
  17. 2026-05-27 13:37 UTCEPSS rescore
  18. 2026-05-27 13:37 UTCEPSS rescore
  19. 2026-05-26 13:41 UTCEPSS rescore
  20. 2026-05-26 13:41 UTCEPSS rescore
  21. 2026-05-26 13:41 UTCEPSS rescore
  22. 2026-05-26 07:16 UTCEPSS rescore
  23. 2026-05-26 07:16 UTCEPSS rescore
  24. 2026-05-24 16:42 UTCEPSS rescore
  25. 2026-05-22 21:15 UTCEPSS rescore
  26. 2026-05-21 22:38 UTCEPSS rescore
  27. 2026-05-20 22:36 UTCEPSS rescore
  28. 2026-05-20 11:20 UTCEPSS rescore
  29. 2026-05-20 11:20 UTCEPSS rescore
  30. 2026-05-20 08:43 UTCVendor advisory
  31. 2026-05-20 08:43 UTCGHSA enrichment
  32. 2026-05-20 04:19 UTCVendor advisory
  33. 2026-05-20 04:19 UTCGHSA enrichment
  34. 2026-05-19 23:46 UTCVendor advisory
  35. 2026-05-19 23:46 UTCGHSA enrichment
  36. 2026-05-19 19:20 UTCVendor advisory
  37. 2026-05-19 19:20 UTCGHSA enrichment
  38. 2026-05-19 14:57 UTCVendor advisory
  39. 2026-05-19 14:57 UTCGHSA enrichment
  40. 2026-05-19 06:31 UTCVendor advisory
  41. 2026-05-19 06:31 UTCGHSA enrichment
  42. 2026-05-19 02:05 UTCEG score recompute
  43. 2026-05-19 02:05 UTCVendor advisory
  44. 2026-05-19 02:05 UTCGHSA enrichment
  45. 2026-05-18 21:29 UTCEPSS rescore
  46. 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-21314✓ verified
    First seen Mar 7, 2002

    OpenSSH 2.x/3.0.1/3.0.2 - Channel Code Off-by-One

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2002-0083?
CVE-2002-0083 is a critical vulnerability published on March 15, 2002. Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.
When was CVE-2002-0083 disclosed?
CVE-2002-0083 was first published in the National Vulnerability Database on March 15, 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-2002-0083 actively exploited?
CVE-2002-0083 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2002-0083?
CVE-2002-0083 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2002-0083?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-0083, 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

Explore the affected products and dependency analysis for CVE-2002-0083

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