CVE-2026-27871

LOWPre-NVD 2.92.9—
EchelonGraph scoreMEDIUM confidence

This low-severity CVE scores 2.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
2.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 2.9Exploit: None knownExposed: 0

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

Cwe-327 Use of a Broken or Risky Cryptographic Algorithm vulnerability in Johnson Controls TL280 allows Cryptanalytic Attack.

This issue affects TL280: before 5.63.

CVSS v3
2.9
EG Score
2.9(medium)
EG Risk
13(Track)
EG Risk 13/100SSVC: Track

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
Severity29% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 14, 2026

Last Modified

September 3, 2026

References (1)

Vendor Advisories for CVE-2026-27871(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 10× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-18 10:22 UTCEG score recompute
  4. 2026-09-18 10:22 UTCGHSA enrichment
  5. 2026-09-17 19:30 UTCEPSS rescore
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 12:08 UTCEG score recompute
  9. 2026-09-15 12:08 UTCGHSA enrichment
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 15:01 UTCEPSS rescore
  12. 2026-09-12 13:41 UTCEG score recompute
  13. 2026-09-12 13:41 UTCGHSA enrichment
  14. 2026-09-11 14:52 UTCEPSS rescore
  15. 2026-09-10 09:34 UTCEPSS rescore
  16. 2026-09-09 15:26 UTCEG score recompute
  17. 2026-09-09 15:26 UTCGHSA enrichment
  18. 2026-09-08 22:00 UTCEPSS rescore
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-06 15:53 UTCEG score recompute
  21. 2026-09-06 15:53 UTCGHSA enrichment
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-06 13:47 UTCEPSS rescore
  24. 2026-09-04 05:06 UTCEPSS rescore
  25. 2026-09-03 17:39 UTCEG score recompute
Show 34 more
  1. 2026-09-03 17:39 UTCGHSA enrichment
  2. 2026-09-02 14:11 UTCEPSS rescore
  3. 2026-09-01 13:53 UTCEPSS rescore
  4. 2026-09-01 13:18 UTCEG score recompute
  5. 2026-09-01 13:18 UTCGHSA enrichment
  6. 2026-09-01 04:39 UTCEPSS rescore
  7. 2026-09-01 04:39 UTCEPSS rescore
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-29 15:03 UTCEG score recompute
  11. 2026-08-29 15:03 UTCGHSA enrichment
  12. 2026-08-28 21:41 UTCEPSS rescore
  13. 2026-08-27 14:25 UTCEPSS rescore
  14. 2026-08-26 14:46 UTCEPSS rescore
  15. 2026-08-26 13:51 UTCEG score recompute
  16. 2026-08-26 13:50 UTCGHSA enrichment
  17. 2026-08-23 15:36 UTCEG score recompute
  18. 2026-08-23 15:36 UTCGHSA enrichment
  19. 2026-08-23 00:19 UTCEPSS rescore
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 17:22 UTCEG score recompute
  23. 2026-08-20 17:22 UTCGHSA enrichment
  24. 2026-08-19 17:03 UTCEPSS rescore
  25. 2026-08-18 13:48 UTCEPSS rescore
  26. 2026-08-17 19:05 UTCEG score recompute
  27. 2026-08-17 19:04 UTCGHSA enrichment
  28. 2026-08-17 13:47 UTCEPSS rescore
  29. 2026-08-16 14:56 UTCEPSS rescore
  30. 2026-08-16 02:14 UTCEPSS rescore
  31. 2026-08-14 20:18 UTCEG score recompute
  32. 2026-08-14 19:54 UTCEG score recompute
  33. 2026-08-14 19:39 UTCEG score recompute
  34. 2026-08-14 19:38 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-27871?
CVE-2026-27871 is a low vulnerability published on August 14, 2026. Cwe-327 Use of a Broken or Risky Cryptographic Algorithm vulnerability in Johnson Controls TL280 allows Cryptanalytic Attack. This issue affects TL280: before 5.63.
When was CVE-2026-27871 disclosed?
CVE-2026-27871 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27871 actively exploited?
CVE-2026-27871 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.5% of all scored CVEs.
What is the CVSS score of CVE-2026-27871?
CVE-2026-27871 has a CVSS v3 base score of 2.9 (NVD).
How do I remediate CVE-2026-27871?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27871, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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