CVE-2026-71402

MEDIUMPre-NVD 5.45.4
EchelonGraph scoreMEDIUM confidence

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

Score 5.4 from GitHub Security Advisory published 2026-08-27. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
5.4EG
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: 0.2%CVSS: 5.4Exploit: 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 out-of-bounds read was found in the DHCPv4 packet capture code of wicked. ni_capture_inspect_udp_header() in src/capture.c reports the IP total length as the payload length instead of the length of the remaining UDP payload. Consequently, the DHCP option walker in the DHCPv4 client (wickedd-dhcp4) reads up to ihl + 8 bytes — at most 68 bytes — past the end of the 1500-byte packet receive buffer. An unauthenticated attacker on the same network who sends a crafted DHCP/UDP packet can make the client parse adjacent heap memory as DHCP options, so that heap contents such as allocator metadata or pointer values can be interpreted into lease fields. The over-read is bounded to 68 bytes; no memory write, no attacker control over the adjacent bytes and no remote exfiltration primitive has been demonstrated. This issue affects wicked up to and including version 0.6.80.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium 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)
Severity54% × 45%
The EG Score, 5.4 of 10.
Exploitation0.2% × 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
0.2%
EPSS %ILE
14th
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-2026-71402(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 73× 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 122 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 22 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 0.2% · 14th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th 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 0.2% · 14th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-10-10 01:53 UTCEG score recompute
  10. 2026-10-10 01:53 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-08 08:33 UTCEG score recompute
  14. 2026-10-08 08:33 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-07 08:11 UTCEG score recompute
  17. 2026-10-07 08:11 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-10-06 07:48 UTCEG score recompute
  20. 2026-10-06 07:48 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-10-05 07:27 UTCEG score recompute
  23. 2026-10-05 07:27 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-04 07:05 UTCEG score recompute
Show 75 more
  1. 2026-10-04 07:05 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  2. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-03 06:43 UTCEG score recompute
  4. 2026-10-03 06:43 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  5. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-10-02 06:18 UTCEG score recompute
  7. 2026-10-02 06:18 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  8. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-10-01 05:31 UTCEG score recompute
  10. 2026-10-01 05:31 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  11. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-09-30 04:59 UTCEG score recompute
  13. 2026-09-30 04:59 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  14. 2026-09-28 21:15 UTCEG score recompute
  15. 2026-09-28 21:15 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  16. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-09-27 19:04 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  18. 2026-09-26 18:42 UTCEG score recompute
  19. 2026-09-26 18:42 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  20. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-25 07:05 UTCEG score recompute
  22. 2026-09-25 07:05 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  23. 2026-09-24 06:43 UTCEG score recompute
  24. 2026-09-24 06:42 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  25. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-09-23 06:20 UTCEG score recompute
  27. 2026-09-23 06:20 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  28. 2026-09-22 05:58 UTCEG score recompute
  29. 2026-09-22 05:58 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  30. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  31. 2026-09-21 05:36 UTCEG score recompute
  32. 2026-09-21 05:36 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  33. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  34. 2026-09-20 05:13 UTCEG score recompute
  35. 2026-09-20 05:13 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  36. 2026-09-19 04:51 UTCEG score recompute
  37. 2026-09-19 04:51 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  38. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  39. 2026-09-18 04:29 UTCEG score recompute
  40. 2026-09-18 04:29 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  41. 2026-09-17 04:07 UTCEG score recompute
  42. 2026-09-17 04:07 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  43. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  45. 2026-09-16 03:42 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  46. 2026-09-15 03:19 UTCEG score recompute
  47. 2026-09-15 03:19 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  48. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  49. 2026-09-14 02:57 UTCEG score recompute
  50. 2026-09-14 02:57 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  51. 2026-09-13 02:35 UTCEG score recompute
  52. 2026-09-13 02:35 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  53. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  54. 2026-09-12 02:13 UTCEG score recompute
  55. 2026-09-12 02:12 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  56. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  57. 2026-09-11 01:50 UTCEG score recompute
  58. 2026-09-11 01:50 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  59. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  60. 2026-09-10 01:28 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  61. 2026-09-09 01:05 UTCEG score recompute
  62. 2026-09-09 01:05 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  63. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  64. 2026-09-08 00:43 UTCEG score recompute
  65. 2026-09-08 00:42 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  66. 2026-09-07 00:20 UTCEG score recompute
  67. 2026-09-07 00:20 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  68. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  69. 2026-09-05 23:54 UTCEG score recompute
  70. 2026-09-05 23:54 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  71. 2026-09-04 23:32 UTCEG score recompute
  72. 2026-09-04 23:32 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  73. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  74. 2026-09-03 22:12 UTCGHSA enrichmentGHSA-qwmv-r6fq-g9r3 · GitHub CVSS 5.4
  75. 2026-09-02 21:25 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71402?
CVE-2026-71402 is a medium-severity vulnerability; its CVE record was published on August 27, 2026. An out-of-bounds read was found in the DHCPv4 packet capture code of wicked. nicaptureinspectudpheader() in src/capture.c reports the IP total length as the payload length instead of the length of the remaining UDP payload. Consequently, the DHCP option walker in the DHCPv4 client (wickedd-dhcp4)…
When was CVE-2026-71402 made public?
CVE-2026-71402 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-2026-71402 actively exploited?
CVE-2026-71402 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71402?
CVE-2026-71402 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71402?
An upstream fix for CVE-2026-71402 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-2026-71402 are linked in the Vendor Advisories panel on this page.

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