CVE-2026-72712

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-11. the CNA's CVSS baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

Nmap versions up to and including 7.99 contains a denial of service vulnerability that allows remote attackers to crash the application by sending a crafted packet containing a zero-length TCP option. The malformed packet forces the Packet:parse_options() function in nselib/packet.lua to allocate objects in an infinite loop, causing an out-of-memory condition that results in application crash.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 14, 2026

Advisory Details (4)

Auto-updated Aug 11, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Nmap 7.99 Denial of Service via Zero-Length TCP Option Packet | Advisories | VulnCheck

https://www.vulncheck.com/advisories/nmap-denial-of-service-via-zero-length-tcp-option-packet
generic

Packet:parse_options() in nselib/packet.lua allows uncontrolled memory consumption (DoS) · Issue #3368 · nmap/nmap · GitHub

https://github.com/nmap/nmap/issues/3368
github_commit

commit 7ef4ee030a00 (nmap/nmap)

Fix landed in nmap/nmap commit 7ef4ee030a00 — awaiting tagged release

https://github.com/nmap/nmap/commit/7ef4ee030a0023fe22616387a000032e1a678b6a
generic

GitHub - nmap/nmap: Nmap - the Network Mapper. Github mirror of official SVN repository. · GitHub

https://github.com/nmap/nmap

Vendor Advisories for CVE-2026-72712(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nmap7.93+dfsg1-1 ... 7.99+dfsg-2 (20 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nmap7.95+dfsg-3, 7.98+dfsg-1, 7.98+dfsg-1~bpo13+1, 7.99+dfsg-1, 7.99+dfsg-2——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nmap7.95+dfsg-3, 7.98+dfsg-1, 7.98+dfsg-1~bpo13+1, 7.99+dfsg-1, 7.99+dfsg-2——

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 24× in last 7d / 112× 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.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-09-19 23:12 UTCEG score recompute
  2. 2026-09-19 23:12 UTCVendor advisory
  3. 2026-09-19 23:12 UTCGHSA enrichment
  4. 2026-09-18 23:51 UTCEG score recompute
  5. 2026-09-18 23:51 UTCVendor advisory
  6. 2026-09-18 23:51 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 00:36 UTCEG score recompute
  9. 2026-09-18 00:36 UTCVendor advisory
  10. 2026-09-18 00:36 UTCGHSA enrichment
  11. 2026-09-17 00:42 UTCEG score recompute
  12. 2026-09-17 00:42 UTCVendor advisory
  13. 2026-09-17 00:42 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 01:34 UTCEG score recompute
  17. 2026-09-16 01:34 UTCVendor advisory
  18. 2026-09-16 01:34 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 01:07 UTCVendor advisory
  21. 2026-09-15 01:07 UTCGHSA enrichment
  22. 2026-09-14 01:59 UTCEG score recompute
  23. 2026-09-14 01:59 UTCVendor advisory
  24. 2026-09-14 01:59 UTCGHSA enrichment
  25. 2026-09-13 02:51 UTCEG score recompute
Show 75 more
  1. 2026-09-13 02:51 UTCVendor advisory
  2. 2026-09-13 02:51 UTCGHSA enrichment
  3. 2026-09-12 15:02 UTCEPSS rescore
  4. 2026-09-12 03:43 UTCEG score recompute
  5. 2026-09-12 03:43 UTCVendor advisory
  6. 2026-09-12 03:43 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 04:35 UTCEG score recompute
  9. 2026-09-11 04:35 UTCGHSA enrichment
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-10 05:27 UTCGHSA enrichment
  12. 2026-09-09 06:19 UTCEG score recompute
  13. 2026-09-09 06:19 UTCVendor advisory
  14. 2026-09-09 06:19 UTCGHSA enrichment
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 07:11 UTCEG score recompute
  17. 2026-09-08 07:11 UTCVendor advisory
  18. 2026-09-08 07:11 UTCGHSA enrichment
  19. 2026-09-07 06:03 UTCEG score recompute
  20. 2026-09-07 06:03 UTCVendor advisory
  21. 2026-09-07 06:03 UTCGHSA enrichment
  22. 2026-09-06 13:48 UTCEPSS rescore
  23. 2026-09-06 06:23 UTCEG score recompute
  24. 2026-09-06 06:23 UTCVendor advisory
  25. 2026-09-06 06:23 UTCGHSA enrichment
  26. 2026-09-05 07:14 UTCEG score recompute
  27. 2026-09-05 07:14 UTCVendor advisory
  28. 2026-09-05 07:14 UTCGHSA enrichment
  29. 2026-09-04 08:06 UTCEG score recompute
  30. 2026-09-04 08:06 UTCVendor advisory
  31. 2026-09-04 08:05 UTCGHSA enrichment
  32. 2026-09-04 05:07 UTCEPSS rescore
  33. 2026-09-03 05:55 UTCEG score recompute
  34. 2026-09-03 05:55 UTCVendor advisory
  35. 2026-09-03 05:55 UTCGHSA enrichment
  36. 2026-09-02 14:12 UTCEPSS rescore
  37. 2026-09-02 06:20 UTCEG score recompute
  38. 2026-09-02 06:20 UTCVendor advisory
  39. 2026-09-02 06:19 UTCGHSA enrichment
  40. 2026-09-01 13:54 UTCEPSS rescore
  41. 2026-09-01 06:58 UTCEG score recompute
  42. 2026-09-01 06:58 UTCVendor advisory
  43. 2026-09-01 06:57 UTCGHSA enrichment
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-09-01 04:40 UTCEPSS rescore
  46. 2026-08-31 07:47 UTCEG score recompute
  47. 2026-08-31 07:47 UTCVendor advisory
  48. 2026-08-31 07:47 UTCGHSA enrichment
  49. 2026-08-30 19:18 UTCEPSS rescore
  50. 2026-08-30 19:17 UTCEPSS rescore
  51. 2026-08-30 08:39 UTCEG score recompute
  52. 2026-08-30 08:39 UTCVendor advisory
  53. 2026-08-30 08:39 UTCGHSA enrichment
  54. 2026-08-30 01:22 UTCEPSS rescore
  55. 2026-08-29 09:31 UTCEG score recompute
  56. 2026-08-29 09:31 UTCVendor advisory
  57. 2026-08-29 09:31 UTCGHSA enrichment
  58. 2026-08-28 21:42 UTCEPSS rescore
  59. 2026-08-28 10:22 UTCEG score recompute
  60. 2026-08-28 10:22 UTCVendor advisory
  61. 2026-08-28 10:21 UTCGHSA enrichment
  62. 2026-08-27 14:25 UTCEPSS rescore
  63. 2026-08-27 08:05 UTCEG score recompute
  64. 2026-08-27 08:05 UTCVendor advisory
  65. 2026-08-27 08:05 UTCGHSA enrichment
  66. 2026-08-26 14:47 UTCEPSS rescore
  67. 2026-08-26 08:55 UTCEG score recompute
  68. 2026-08-26 08:55 UTCVendor advisory
  69. 2026-08-26 08:55 UTCGHSA enrichment
  70. 2026-08-25 13:49 UTCEPSS rescore
  71. 2026-08-25 09:47 UTCEG score recompute
  72. 2026-08-25 09:47 UTCVendor advisory
  73. 2026-08-25 09:46 UTCGHSA enrichment
  74. 2026-08-24 10:38 UTCEG score recompute
  75. 2026-08-24 10:38 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-72712?
CVE-2026-72712 is a medium vulnerability published on August 11, 2026. Nmap versions up to and including 7.99 contains a denial of service vulnerability that allows remote attackers to crash the application by sending a crafted packet containing a zero-length TCP option. The malformed packet forces the Packet:parse_options() function in nselib/packet.lua to allocate…
When was CVE-2026-72712 disclosed?
CVE-2026-72712 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72712 actively exploited?
CVE-2026-72712 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.3% of all scored CVEs.
What is the CVSS score of CVE-2026-72712?
CVE-2026-72712 has a CVSS v4.0 base score of 6.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-72712?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72712, 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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