CVE-2026-71401

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (16th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

An integer underflow was found in the DHCPv4 packet capture code of wicked. ni_capture_inspect_udp_header() in src/capture.c does not verify that the IP total length field (ip_len) is at least as large as the IP header length (ihl) before subtracting the header length. An unauthenticated attacker on the same network can thereby trigger an out-of-bounds read past the receive buffer in the wicked DHCPv4 client (wickedd-dhcp4), which can crash the daemon depending on the process memory layout. No information disclosure has been demonstrated. This issue affects wicked up to and including version 0.6.80.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
0.3%
EPSS %ILE
16th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 27, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
GitHub pull request

capture: fix two OOB reads in ni_capture_inspect_udp_header

Fix merged in openSUSE/wicked PR #1079 on 2026-08-27 — awaiting tagged release

https://github.com/openSUSE/wicked/pull/1079
Web page

Making sure you're not a bot!

https://bugzilla.suse.com/show_bug.cgi?id=1274627

Vendor Advisories for CVE-2026-71401(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 72× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 121 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  3. 2026-10-12 15:42 UTCEG score recompute
  4. 2026-10-11 19:28 UTCEG score recompute
  5. 2026-10-11 16:43 UTCEG score recompute
  6. 2026-10-11 14:04 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  9. 2026-10-10 05:20 UTCEG score recompute
  10. 2026-10-10 05:20 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  12. 2026-10-09 03:05 UTCEG score recompute
  13. 2026-10-09 03:04 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  15. 2026-10-08 01:19 UTCEG score recompute
  16. 2026-10-08 01:19 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  18. 2026-10-06 18:06 UTCEG score recompute
  19. 2026-10-06 18:06 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  22. 2026-10-05 17:09 UTCEG score recompute
  23. 2026-10-05 17:09 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  25. 2026-10-04 16:12 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
Show 75 more
  1. 2026-10-03 15:13 UTCEG score recompute
  2. 2026-10-03 15:13 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  3. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  4. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  5. 2026-10-02 06:53 UTCEG score recompute
  6. 2026-10-02 06:53 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  7. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  8. 2026-10-01 05:56 UTCEG score recompute
  9. 2026-10-01 05:56 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  10. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  11. 2026-09-30 04:59 UTCEG score recompute
  12. 2026-09-30 04:59 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  13. 2026-09-28 21:15 UTCEG score recompute
  14. 2026-09-28 21:15 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  15. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  16. 2026-09-27 19:41 UTCEG score recompute
  17. 2026-09-27 19:41 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  19. 2026-09-26 18:42 UTCEG score recompute
  20. 2026-09-26 18:42 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  22. 2026-09-24 18:46 UTCEG score recompute
  23. 2026-09-24 18:46 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  25. 2026-09-23 17:43 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  26. 2026-09-22 16:37 UTCEG score recompute
  27. 2026-09-22 16:37 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  28. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  29. 2026-09-21 15:34 UTCEG score recompute
  30. 2026-09-21 15:33 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  31. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  32. 2026-09-20 14:36 UTCEG score recompute
  33. 2026-09-20 14:36 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  34. 2026-09-19 13:37 UTCEG score recompute
  35. 2026-09-19 13:37 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  36. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  37. 2026-09-18 12:40 UTCEG score recompute
  38. 2026-09-18 12:40 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  39. 2026-09-17 11:42 UTCEG score recompute
  40. 2026-09-17 11:42 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  41. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  42. 2026-09-16 10:45 UTCEG score recompute
  43. 2026-09-16 10:45 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  44. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  45. 2026-09-15 09:41 UTCEG score recompute
  46. 2026-09-15 09:41 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  47. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  48. 2026-09-14 08:43 UTCEG score recompute
  49. 2026-09-14 08:43 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  50. 2026-09-13 07:45 UTCEG score recompute
  51. 2026-09-13 07:45 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  52. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  53. 2026-09-12 06:48 UTCEG score recompute
  54. 2026-09-12 06:48 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  55. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  56. 2026-09-11 05:48 UTCEG score recompute
  57. 2026-09-11 05:48 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  58. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  59. 2026-09-10 04:50 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  60. 2026-09-09 03:52 UTCEG score recompute
  61. 2026-09-09 03:52 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  62. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  63. 2026-09-08 02:55 UTCEG score recompute
  64. 2026-09-08 02:55 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  65. 2026-09-07 01:57 UTCEG score recompute
  66. 2026-09-07 01:57 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  67. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  68. 2026-09-06 00:57 UTCEG score recompute
  69. 2026-09-06 00:56 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  70. 2026-09-04 23:57 UTCEG score recompute
  71. 2026-09-04 23:57 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  72. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  73. 2026-09-03 22:59 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f
  74. 2026-09-02 22:00 UTCEG score recompute
  75. 2026-09-02 22:00 UTCGHSA enrichmentGHSA-p653-f3q8-xm5f

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71401?
CVE-2026-71401 is a medium-severity vulnerability; its CVE record was published on August 27, 2026. An integer underflow was found in the DHCPv4 packet capture code of wicked. nicaptureinspectudpheader() in src/capture.c does not verify that the IP total length field (ip_len) is at least as large as the IP header length (ihl) before subtracting the header length. An unauthenticated attacker on…
When was CVE-2026-71401 made public?
CVE-2026-71401 was made public on August 27, 2026: that is the date its CVE record's CNA, SUSE, gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-71401 actively exploited?
CVE-2026-71401 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71401?
CVE-2026-71401 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71401?
An upstream fix for CVE-2026-71401 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-2026-71401 are linked in the Vendor Advisories panel on this page.

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