CVE-2016-8562

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 4%CVSS: 7.5Exploit: NoneExposed: 0

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

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.

CVSS v3
7.5
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
88.3%
KEV
⚠ Exploited

Published

November 18, 2016

Last Modified

April 21, 2026

Advisory Details (3)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-8562
generic

Siemens home | Siemens

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf
generic
http://www.securityfocus.com/bid/94436

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 50× in last 7d / 223× 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.

Showing the most recent 100 of 449 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2016-8562?
CVE-2016-8562 is a high vulnerability published on November 18, 2016. A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to…
When was CVE-2016-8562 disclosed?
CVE-2016-8562 was first published in the National Vulnerability Database on November 18, 2016, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-8562 actively exploited?
Yes. CISA added CVE-2016-8562 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Siemens SIMATIC CP. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2016-8562?
CVE-2016-8562 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2016-8562?
CVE-2016-8562 affects Siemens SIMATIC CP. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2016-8562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-8562, 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.

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