CVE-2026-15511

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-13. A secondary CVSS source baseline 9.8; 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 weekElevated
9.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 4.7%CVSS: 9.8Exploit: No code on recordExposed 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 description, written by its CNA (VulDB), states the affected versions: "A vulnerability was determined in Comfast CF-WR631AX V3 up to 2.7.0.8." No release containing a fix is confirmed on record.

A vulnerability was determined in Comfast CF-WR631AX V3 up to 2.7.0.8. Affected by this vulnerability is the function system_wl_upload_pic_file of the file /usr/bin/webmgnt of the component FastCGI Backend. This manipulation of the argument filename causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

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)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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
4.7%
EPSS %ILE
91st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 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 total (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

July 12, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Oct 11, 2026
No fix on record yet.
Web page

cve/Command Injection in Comfast CF-WR631AX V3 — WiFi Portal Image Upload (CWE-78) at main · luminarydawn/cve · GitHub

https://github.com/luminarydawn/cve/tree/main/Command%20Injection%20in%20Comfast%20CF-WR631AX%20V3%20%E2%80%94%20WiFi%20Portal%20Image%20Upload%20(CWE-78)

Vendor Advisories for CVE-2026-15511(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 17× in last 7d / 43× 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 378 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 278 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  2. 2026-10-14 02:50 UTCEG score recompute
  3. 2026-10-14 02:49 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  5. 2026-10-12 22:56 UTCEG score recompute
  6. 2026-10-12 22:55 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  7. 2026-10-12 16:33 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  8. 2026-10-12 16:31 UTCEG score recompute
  9. 2026-10-12 09:38 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  10. 2026-10-11 20:10 UTCEG score recompute
  11. 2026-10-11 17:22 UTCEG score recompute
  12. 2026-10-11 14:55 UTCEG score recompute
  13. 2026-10-11 13:48 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  14. 2026-10-10 19:59 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  15. 2026-10-09 20:06 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  16. 2026-10-08 17:11 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  18. 2026-10-06 15:17 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  19. 2026-10-05 17:42 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  20. 2026-10-04 23:21 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  21. 2026-10-03 14:25 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  22. 2026-10-01 19:49 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  23. 2026-10-01 14:48 UTCEG score recompute
  24. 2026-10-01 14:48 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  25. 2026-09-30 15:02 UTCEPSS rescoreEPSS 4.7% · 91st percentile
Show 75 more
  1. 2026-09-29 15:20 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  2. 2026-09-28 13:51 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  3. 2026-09-28 13:32 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  4. 2026-09-28 09:39 UTCEG score recompute
  5. 2026-09-28 09:39 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  6. 2026-09-27 13:47 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  7. 2026-09-26 15:58 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  8. 2026-09-24 10:17 UTCEG score recompute
  9. 2026-09-24 10:17 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  10. 2026-09-23 09:27 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  11. 2026-09-23 05:37 UTCEG score recompute
  12. 2026-09-23 05:37 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  13. 2026-09-18 19:27 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  14. 2026-09-18 10:07 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  15. 2026-09-18 05:09 UTCEG score recompute
  16. 2026-09-18 05:09 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  17. 2026-09-16 14:07 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  18. 2026-09-16 05:14 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  19. 2026-09-14 11:08 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  20. 2026-09-14 07:15 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  21. 2026-09-14 03:25 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  22. 2026-09-13 23:36 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  23. 2026-09-13 16:40 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  24. 2026-09-13 11:56 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  25. 2026-09-13 08:05 UTCEG score recompute
  26. 2026-09-13 08:05 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  27. 2026-09-12 15:00 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  28. 2026-09-12 13:31 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  29. 2026-09-12 02:02 UTCEG score recompute
  30. 2026-09-12 02:02 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  31. 2026-09-11 14:52 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  32. 2026-09-11 09:36 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  33. 2026-09-10 09:34 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  34. 2026-09-08 22:00 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  35. 2026-09-08 02:17 UTCEG score recompute
  36. 2026-09-08 02:17 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  38. 2026-09-06 13:53 UTCEG score recompute
  39. 2026-09-06 13:53 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  41. 2026-09-06 01:45 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  42. 2026-09-05 21:32 UTCEG score recompute
  43. 2026-09-05 21:32 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  44. 2026-09-04 05:06 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  45. 2026-09-02 14:11 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  46. 2026-09-01 13:53 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  47. 2026-09-01 04:39 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  48. 2026-08-31 00:08 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  49. 2026-08-30 20:19 UTCEG score recompute
  50. 2026-08-30 20:18 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  51. 2026-08-30 19:17 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  52. 2026-08-30 16:29 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  53. 2026-08-30 11:10 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  54. 2026-08-30 05:44 UTCEG score recompute
  55. 2026-08-30 05:44 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  56. 2026-08-30 01:22 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  57. 2026-08-28 21:41 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  58. 2026-08-28 02:37 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  59. 2026-08-27 21:37 UTCEG score recompute
  60. 2026-08-27 21:37 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  61. 2026-08-27 14:25 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  62. 2026-08-27 14:15 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  63. 2026-08-27 00:20 UTCEG score recompute
  64. 2026-08-27 00:20 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  65. 2026-08-26 14:46 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  66. 2026-08-26 12:52 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  67. 2026-08-26 08:06 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  68. 2026-08-26 02:41 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  69. 2026-08-25 15:52 UTCEG score recompute
  70. 2026-08-25 15:52 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  71. 2026-08-25 13:48 UTCEPSS rescoreEPSS 4.7% · 91st percentile
  72. 2026-08-25 11:35 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  73. 2026-08-25 07:38 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  74. 2026-08-25 03:46 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8
  75. 2026-08-24 23:57 UTCGHSA enrichmentGHSA-hpmx-855m-f9m5 · GitHub severity HIGH · GitHub CVSS 9.8

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15511?
CVE-2026-15511 is a critical-severity vulnerability; its CVE record was published on July 12, 2026. A vulnerability was determined in Comfast CF-WR631AX V3 up to 2.7.0.8. Affected by this vulnerability is the function systemwluploadpicfile of the file /usr/bin/webmgnt of the component FastCGI Backend. This manipulation of the argument filename causes os command injection. It is possible to…
When was the CVE record for CVE-2026-15511 published?
The CVE record for CVE-2026-15511 was published on July 12, 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 July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-15511 actively exploited?
CVE-2026-15511 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.7% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15511?
CVE-2026-15511 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15511?
No fix for CVE-2026-15511 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 description, written by its CNA (VulDB), states the affected versions: "A vulnerability was determined in Comfast CF-WR631AX V3 up to 2.7.0.8." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-15511 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-15511

Explore →

Is Your Infrastructure Affected by CVE-2026-15511?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs