CVE-2026-66155

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (19th 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
7.6EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.6Exploit: 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 (Siemens) lists Siemens Element maps-ng V47 versions before V47.12.3; Siemens Element maps-ng V48 versions before V48.11.3; Siemens Element maps-ng V49 versions before V49.16.1 as affected. No release containing a fix is confirmed on record.

A vulnerability has been identified in Element maps-ng V47 (All versions < V47.12.3), Element maps-ng V48 (All versions < V48.11.3), Element maps-ng V49 (All versions < V49.16.1). The si-map component does not properly neutralize user-controllable input of the points property that is used to render the tooltip label of map pins. This could allow an attacker to craft a malicious URL that, when loaded by a victim and the map pin is hovered over, executes arbitrary script code within the victim's browser session.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity76% × 45%
The EG Score, 7.6 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: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines, and watch for a fix.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines, and watch for a fix.

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

August 28, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
No fix on record yet.
Web page

SSA-682041

https://cert-portal.siemens.com/productcert/html/ssa-682041.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 51× 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.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-13 10:58 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-10-12 15:46 UTCEG score recompute
  6. 2026-10-11 19:31 UTCEG score recompute
  7. 2026-10-11 16:46 UTCEG score recompute
  8. 2026-10-11 14:07 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-10 02:07 UTCEG score recompute
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-09 03:09 UTCEG score recompute
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-10-08 01:21 UTCEG score recompute
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-10-07 03:14 UTCEG score recompute
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-10-06 00:54 UTCEG score recompute
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  21. 2026-10-05 09:01 UTCEG score recompute
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-10-03 15:14 UTCEG score recompute
  24. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  25. 2026-10-03 02:01 UTCEG score recompute
Show 54 more
  1. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  2. 2026-10-01 22:32 UTCEG score recompute
  3. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  4. 2026-09-30 19:55 UTCEG score recompute
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  6. 2026-09-30 05:05 UTCEG score recompute
  7. 2026-09-28 23:26 UTCEG score recompute
  8. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  9. 2026-09-27 21:06 UTCEG score recompute
  10. 2026-09-26 18:47 UTCEG score recompute
  11. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  12. 2026-09-25 01:47 UTCEG score recompute
  13. 2026-09-23 23:26 UTCEG score recompute
  14. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-09-22 20:59 UTCEG score recompute
  16. 2026-09-22 07:48 UTCEG score recompute
  17. 2026-09-21 05:28 UTCEG score recompute
  18. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-09-20 02:11 UTCEG score recompute
  20. 2026-09-18 23:49 UTCEG score recompute
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-17 21:24 UTCEG score recompute
  23. 2026-09-16 19:04 UTCEG score recompute
  24. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  26. 2026-09-15 15:09 UTCEG score recompute
  27. 2026-09-13 23:20 UTCEG score recompute
  28. 2026-09-12 21:00 UTCEG score recompute
  29. 2026-09-11 18:39 UTCEG score recompute
  30. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  31. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  32. 2026-09-10 16:19 UTCEG score recompute
  33. 2026-09-09 00:42 UTCEG score recompute
  34. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  35. 2026-09-07 19:05 UTCEG score recompute
  36. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  37. 2026-09-06 16:46 UTCEG score recompute
  38. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  39. 2026-09-06 03:35 UTCEG score recompute
  40. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  41. 2026-09-05 01:14 UTCEG score recompute
  42. 2026-09-04 12:02 UTCEG score recompute
  43. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-09-02 20:30 UTCEG score recompute
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  46. 2026-08-31 00:02 UTCEG score recompute
  47. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  48. 2026-08-30 10:52 UTCEG score recompute
  49. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  50. 2026-08-29 08:30 UTCEG score recompute
  51. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  52. 2026-08-27 13:32 UTCEG score recompute
  53. 2026-08-27 12:59 UTCEG score recomputeFirst assessed: 7.6 HIGH
  54. 2026-08-27 12:58 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-66155?
CVE-2026-66155 is a high-severity vulnerability; its CVE record was published on August 27, 2026. A vulnerability has been identified in Element maps-ng V47 (All versions < V47.12.3), Element maps-ng V48 (All versions < V48.11.3), Element maps-ng V49 (All versions < V49.16.1). The si-map component does not properly neutralize user-controllable input of the points property that is used to render…
When was the CVE record for CVE-2026-66155 published?
The CVE record for CVE-2026-66155 was published on August 27, 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 August 28, 2026; the record at its source may have been updated since.
Is CVE-2026-66155 actively exploited?
CVE-2026-66155 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-2026-66155?
CVE-2026-66155 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66155?
No fix for CVE-2026-66155 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix. The CVE record's CNA (Siemens) lists Siemens Element maps-ng V47 versions before V47.12.3; Siemens Element maps-ng V48 versions before V48.11.3; Siemens Element maps-ng V49 versions before V49.16.1 as affected. No release containing a fix is confirmed on record.

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