CVE-2026-8781

MEDIUMNVD 4.34.3
EchelonGraph scoreMEDIUM confidence

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

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-05-18. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated
4.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

A security flaw has been discovered in omec-project amf up to 2.1.3-dev. The impacted element is the function RANConfiguration of the file ngap/handler.go. The manipulation results in null pointer dereference. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.2.0 is sufficient to resolve this issue. Upgrading the affected component is recommended. The same pull request fixes multiple security issues.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity43% × 45%
Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.

EG Severity
4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (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

May 18, 2026

Last Modified

May 18, 2026

Advisory Details (4)

Auto-updated May 18, 2026
Patch available.
Web page

Release v2.2.0 · omec-project/amf · GitHub

https://github.com/omec-project/amf/releases/tag/v2.2.0
Web page

Address multiple cases of crashes due to malformed NGAP input by gab-arrobo · Pull Request #666 · omec-project/amf · GitHub

https://github.com/omec-project/amf/pull/666
Web page

Malformed RANConfigurationUpdate crashes AMF · Issue #673 · omec-project/amf · GitHub

https://github.com/omec-project/amf/issues/673
Web page

GitHub - omec-project/amf · GitHub

https://github.com/omec-project/amf/

Vendor Advisories for CVE-2026-8781(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/omec-project/amf—
  • every version up to 2.2.0: fixed in 2.2.0
  • every version on: no fix on record
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 32× 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 96 of 175 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-18 03:04 UTCEG score recompute
  4. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-12 14:49 UTCEG score recompute
  11. 2026-10-11 19:16 UTCEG score recompute
  12. 2026-10-11 16:33 UTCEG score recompute
  13. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-11 13:49 UTCEG score recompute
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  20. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-09-30 04:09 UTCOSV refresh
  25. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
Show 71 more
  1. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  3. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  4. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  6. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  10. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  13. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  16. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  17. 2026-09-11 06:23 UTCOSV refresh
  18. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  20. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  23. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  25. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  27. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  28. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  29. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  31. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  32. 2026-08-23 17:17 UTCEG score recompute
  33. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  34. 2026-08-22 00:41 UTCEG score recompute
  35. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  36. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  37. 2026-08-20 19:12 UTCEG score recompute
  38. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-08-17 10:09 UTCEG score recompute
  42. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  43. 2026-08-16 03:41 UTCEG score recompute
  44. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  45. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  46. 2026-08-14 02:41 UTCEG score recompute
  47. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  48. 2026-08-13 02:30 UTCEG score recompute
  49. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  50. 2026-08-12 02:18 UTCEG score recompute
  51. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-08-11 02:06 UTCEG score recompute
  53. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  54. 2026-08-10 01:53 UTCEG score recompute
  55. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  56. 2026-08-09 01:42 UTCEG score recompute
  57. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  58. 2026-08-07 21:53 UTCEG score recompute
  59. 2026-08-07 16:30 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  60. 2026-08-06 21:41 UTCEG score recompute
  61. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  62. 2026-08-05 21:27 UTCEG score recompute
  63. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  64. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  65. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  66. 2026-08-03 19:02 UTCEG score recompute
  67. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  68. 2026-08-02 18:50 UTCEG score recompute
  69. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  70. 2026-08-01 18:38 UTCEG score recompute
  71. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-8781?
CVE-2026-8781 is a medium-severity vulnerability; its CVE record was published on May 18, 2026. A security flaw has been discovered in omec-project amf up to 2.1.3-dev. The impacted element is the function RANConfiguration of the file ngap/handler.go. The manipulation results in null pointer dereference. The attack may be launched remotely. The exploit has been released to the public and may…
When was the CVE record for CVE-2026-8781 published?
The CVE record for CVE-2026-8781 was published on May 18, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 18, 2026; the record at its source may have been updated since.
Is CVE-2026-8781 actively exploited?
CVE-2026-8781 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8781?
CVE-2026-8781 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-8781?
A fix for CVE-2026-8781 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-8781 are linked in the Vendor Advisories panel on this page.

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