CVE-2016-8562

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 4%CVSS: 7.5Exploit: cisa kev · ssvc activeExposed: 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 PROB
4%
EPSS %ILE
89%
KEV
⚠ Exploited

Published

November 18, 2016

Last Modified

June 17, 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 57× in last 7d / 244× 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 950 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2016-8562?
CVE-2016-8562 is a critical 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 June 17, 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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