CVE-2026-14258

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-01. 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%CVSS: 6.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.

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
18%
KEV
Not listed

Published

July 1, 2026

Last Modified

August 12, 2026

Advisory Details (4)

Auto-updated Jul 1, 2026
Patch available. Sources: redhat, github_commit.
generic

Router advertisements with zero-length options trigger an infinite loop · Issue #415 · NetworkConfiguration/dhcpcd · GitHub

https://github.com/NetworkConfiguration/dhcpcd/issues/415
github_commit Patch Available

commit 75289ca (NetworkConfiguration/dhcpcd)

Patch available: NetworkConfiguration/dhcpcd v10.2.0 (contains commit 75289ca)

https://github.com/NetworkConfiguration/dhcpcd/commit/75289ca
redhat

2462305 – (CVE-2026-14258) CVE-2026-14258 dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router Advertisement handling

https://bugzilla.redhat.com/show_bug.cgi?id=2462305
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-14258

Vendor Advisories for CVE-2026-14258(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatdhcpcd-0:10.0.6-11.el10_22026-08-12redhat

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.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
dhcpcd1:10.1.0-11 ... 1:10.3.2-6 (44 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
dhcpcd1:10.1.0-11 ... 1:10.2.4-2 (12 versions)1:10.2.4-3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 99× 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 160 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-14258?
CVE-2026-14258 is a medium vulnerability published on July 1, 2026. A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to…
When was CVE-2026-14258 disclosed?
CVE-2026-14258 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14258 actively exploited?
CVE-2026-14258 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 81.9% of all scored CVEs.
What is the CVSS score of CVE-2026-14258?
CVE-2026-14258 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-14258?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14258, 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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