CVE-2026-72712

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-11. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0.5%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

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
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 11, 2026

Last Modified

September 24, 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(2)

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 rangeFix by version rangeDependents
nmap7.93+dfsg1-1 ... 7.99+dfsg-2 (20 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
nmap7.95+dfsg-3, 7.98+dfsg-1, 7.98+dfsg-1~bpo13+1, 7.99+dfsg-1, 7.99+dfsg-2
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
nmap7.95+dfsg-3, 7.98+dfsg-1, 7.98+dfsg-1~bpo13+1, 7.99+dfsg-1, 7.99+dfsg-2
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 94× 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 192 total refreshes for this CVE.

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

Related CVEs(same product + 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 on August 11, 2026, with the most recent update on September 24, 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 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72712?
CVE-2026-72712 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72712?
An upstream fix for CVE-2026-72712 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-72712 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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