CVE-2026-45254

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-05-21. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (FreeBSD) lists FreeBSD versions 15.0-RELEASE up to but not including p9, 14.4-RELEASE up to but not including p5 and 14.3-RELEASE up to but not including p14 as affected. No release containing a fix is confirmed on record.

In the case of the cap_net service, when a key present in the old limit was omitted from the new limit, the missing key was treated as "allow any" instead of being rejected.

In certain scenarios, an application that had previously restricted a subset of network operations could ask for a new limit that extended the permissions of the process.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100

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)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

May 21, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No fix on record yet.

Vendor Advisories for CVE-2026-45254(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 11× in last 7d / 26× 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 210 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 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  6. 2026-10-12 16:04 UTCEG score recompute
  7. 2026-10-11 19:46 UTCEG score recompute
  8. 2026-10-11 17:01 UTCEG score recompute
  9. 2026-10-11 14:26 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  23. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  24. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 75 more
  1. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  17. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-08-23 16:50 UTCEG score recompute
  21. 2026-08-23 16:50 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  22. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  24. 2026-08-21 21:48 UTCEG score recompute
  25. 2026-08-21 21:47 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  26. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  27. 2026-08-20 18:50 UTCEG score recompute
  28. 2026-08-20 18:50 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  29. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  30. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-08-17 09:49 UTCEG score recompute
  32. 2026-08-17 09:49 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  33. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  34. 2026-08-16 05:21 UTCEG score recompute
  35. 2026-08-16 05:21 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  36. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  37. 2026-08-15 03:44 UTCEG score recompute
  38. 2026-08-15 03:44 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  39. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  40. 2026-08-14 01:58 UTCEG score recompute
  41. 2026-08-14 01:58 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  42. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  43. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  44. 2026-08-12 09:50 UTCEG score recompute
  45. 2026-08-12 09:50 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  46. 2026-08-11 07:23 UTCEG score recompute
  47. 2026-08-11 07:23 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  48. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  49. 2026-08-10 05:45 UTCEG score recompute
  50. 2026-08-10 05:45 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  51. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  52. 2026-08-09 04:08 UTCEG score recompute
  53. 2026-08-09 04:08 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  54. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  55. 2026-08-08 02:31 UTCEG score recompute
  56. 2026-08-08 02:31 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  57. 2026-08-07 00:54 UTCEG score recompute
  58. 2026-08-07 00:54 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  59. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-05 21:14 UTCEG score recompute
  61. 2026-08-05 21:14 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  62. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  63. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  65. 2026-08-03 20:48 UTCEG score recompute
  66. 2026-08-03 20:48 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  67. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  68. 2026-08-02 19:10 UTCEG score recompute
  69. 2026-08-02 19:10 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  70. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  71. 2026-08-01 17:32 UTCEG score recompute
  72. 2026-08-01 17:32 UTCGHSA enrichmentGHSA-rx3c-36rq-fgf8 · GitHub CVSS 6.5
  73. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  74. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  75. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile

Frequently asked(5)

What is CVE-2026-45254?
CVE-2026-45254 is a medium-severity vulnerability; its CVE record was published on May 21, 2026. In the case of the cap_net service, when a key present in the old limit was omitted from the new limit, the missing key was treated as "allow any" instead of being rejected. In certain scenarios, an application that had previously restricted a subset of network operations could ask for a new limit…
When was CVE-2026-45254 made public?
CVE-2026-45254 was made public on May 20, 2026: that is the date its CVE record's CNA, FreeBSD, gives for when the vulnerability was made public. The CVE record itself was published on May 21, 2026. EchelonGraph's copy of the record carries a last-modified date of July 23, 2026; the record at its source may have been updated since.
Is CVE-2026-45254 actively exploited?
CVE-2026-45254 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45254?
CVE-2026-45254 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-45254?
No fix for CVE-2026-45254 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (FreeBSD) lists FreeBSD versions 15.0-RELEASE up to but not including p9, 14.4-RELEASE up to but not including p5 and 14.3-RELEASE up to but not including p14 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-45254 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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