CVE-2003-0356

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-04-29. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 10%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, (4) PPTP, (5) Quake, (6) Quake2, (7) Quake3, (8) Rsync, (9) SMB, (10) SMPP, and (11) TSP dissectors, which do not properly use the tvb_get_nstringz and tvb_get_nstringz0 functions.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.9%
KEV
Not listed

Published

June 9, 2003

Last Modified

June 16, 2026

Advisory Details (4)

Auto-updated Jun 23, 2026
No patch confirmed yet. Sources: cert.
cert

VU#641013 - Ethereal contains multiple one-byte buffer overflows in several dissectors

http://www.kb.cert.org/vuls/id/641013
generic
http://www.ethereal.com/appnotes/enpa-sa-00009.html
generic

Debian -- The Universal Operating System

http://www.debian.org/security/2003/dsa-313
generic

Support

http://www.redhat.com/support/errata/RHSA-2003-077.html

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpatch2003-07-08redhat
redhatpatch2003-07-03redhat

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

(2)

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 4× in last 7d / 24× 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. 2026-07-13 06:07 UTCEPSS rescore
  2. 2026-07-11 08:22 UTCEPSS rescore
  3. 2026-07-11 08:22 UTCEPSS rescore
  4. 2026-07-08 15:09 UTCEPSS rescore
  5. 2026-07-06 02:19 UTCEPSS rescore
  6. 2026-07-04 06:26 UTCEPSS rescore
  7. 2026-07-02 14:00 UTCEPSS rescore
  8. 2026-06-28 14:02 UTCEPSS rescore
  9. 2026-06-28 04:52 UTCEPSS rescore
  10. 2026-06-27 03:04 UTCEPSS rescore
  11. 2026-06-23 21:29 UTCEPSS rescore
  12. 2026-06-22 14:22 UTCEPSS rescore
  13. 2026-06-21 14:52 UTCEPSS rescore
  14. 2026-06-19 19:22 UTCEPSS rescore
  15. 2026-06-19 19:22 UTCEPSS rescore
  16. 2026-06-18 17:49 UTCEPSS rescore
  17. 2026-06-18 17:49 UTCEPSS rescore
  18. 2026-06-17 17:49 UTCEPSS rescore
  19. 2026-06-17 17:49 UTCEPSS rescore
  20. 2026-06-16 17:49 UTCEPSS rescore
  21. 2026-06-16 17:49 UTCEPSS rescore
  22. 2026-06-15 17:43 UTCEPSS rescore
  23. 2026-06-14 23:13 UTCEPSS rescore
  24. 2026-06-14 23:13 UTCEPSS rescore
  25. 2026-06-13 22:56 UTCEPSS rescore
Show 59 more
  1. 2026-06-12 23:08 UTCEPSS rescore
  2. 2026-06-11 13:55 UTCEPSS rescore
  3. 2026-06-10 22:13 UTCEPSS rescore
  4. 2026-06-10 13:17 UTCEPSS rescore
  5. 2026-06-08 14:13 UTCEPSS rescore
  6. 2026-06-06 13:44 UTCEPSS rescore
  7. 2026-06-06 13:44 UTCEPSS rescore
  8. 2026-06-06 13:44 UTCEPSS rescore
  9. 2026-06-05 22:43 UTCEPSS rescore
  10. 2026-06-05 22:43 UTCEPSS rescore
  11. 2026-06-04 13:09 UTCEPSS rescore
  12. 2026-06-02 20:10 UTCEPSS rescore
  13. 2026-06-01 13:49 UTCEPSS rescore
  14. 2026-06-01 13:49 UTCEPSS rescore
  15. 2026-05-31 22:28 UTCEPSS rescore
  16. 2026-05-31 00:13 UTCEPSS rescore
  17. 2026-05-31 00:13 UTCEPSS rescore
  18. 2026-05-29 13:40 UTCEPSS rescore
  19. 2026-05-29 13:40 UTCEPSS rescore
  20. 2026-05-28 13:42 UTCEPSS rescore
  21. 2026-05-28 13:42 UTCEPSS rescore
  22. 2026-05-28 13:42 UTCEPSS rescore
  23. 2026-05-27 13:37 UTCEPSS rescore
  24. 2026-05-26 13:41 UTCEPSS rescore
  25. 2026-05-26 13:41 UTCEPSS rescore
  26. 2026-05-24 16:42 UTCEPSS rescore
  27. 2026-05-22 21:15 UTCEPSS rescore
  28. 2026-05-20 22:36 UTCEPSS rescore
  29. 2026-05-20 11:20 UTCEPSS rescore
  30. 2026-05-20 11:20 UTCEPSS rescore
  31. 2026-05-20 07:56 UTCEG score recompute
  32. 2026-05-20 07:56 UTCVendor advisory
  33. 2026-05-20 07:56 UTCGHSA enrichment
  34. 2026-05-20 03:10 UTCEG score recompute
  35. 2026-05-20 03:10 UTCVendor advisory
  36. 2026-05-20 03:10 UTCGHSA enrichment
  37. 2026-05-19 23:06 UTCEG score recompute
  38. 2026-05-19 23:06 UTCVendor advisory
  39. 2026-05-19 23:06 UTCGHSA enrichment
  40. 2026-05-19 19:01 UTCEG score recompute
  41. 2026-05-19 19:01 UTCVendor advisory
  42. 2026-05-19 19:01 UTCGHSA enrichment
  43. 2026-05-19 14:50 UTCEG score recompute
  44. 2026-05-19 14:50 UTCVendor advisory
  45. 2026-05-19 14:50 UTCGHSA enrichment
  46. 2026-05-19 10:40 UTCEG score recompute
  47. 2026-05-19 10:40 UTCVendor advisory
  48. 2026-05-19 10:40 UTCGHSA enrichment
  49. 2026-05-19 05:48 UTCEG score recompute
  50. 2026-05-19 05:48 UTCVendor advisory
  51. 2026-05-19 05:48 UTCGHSA enrichment
  52. 2026-05-19 05:48 UTCEG score recompute
  53. 2026-05-19 05:48 UTCVendor advisory
  54. 2026-05-19 05:48 UTCGHSA enrichment
  55. 2026-05-19 01:58 UTCEG score recompute
  56. 2026-05-19 01:58 UTCVendor advisory
  57. 2026-05-19 01:57 UTCGHSA enrichment
  58. 2026-05-18 21:29 UTCEPSS rescore
  59. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(5)

What is CVE-2003-0356?
CVE-2003-0356 is a critical vulnerability published on June 9, 2003. Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, (4) PPTP, (5) Quake, (6) Quake2, (7) Quake3, (8) Rsync, (9) SMB, (10) SMPP, and (11) TSP…
When was CVE-2003-0356 disclosed?
CVE-2003-0356 was first published in the National Vulnerability Database on June 9, 2003, 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-2003-0356 actively exploited?
CVE-2003-0356 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2003-0356?
CVE-2003-0356 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2003-0356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2003-0356, 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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