CVE-2016-1287

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 74%
  • Public exploit code is available (Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 74%CVSS: 9.8Exploit: Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

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

Buffer overflow in the IKEv1 and IKEv2 implementations in Cisco ASA Software before 8.4(7.30), 8.7 before 8.7(1.18), 9.0 before 9.0(4.38), 9.1 before 9.1(7), 9.2 before 9.2(4.5), 9.3 before 9.3(3.7), 9.4 before 9.4(2.4), and 9.5 before 9.5(2.2) on ASA 5500 devices, ASA 5500-X devices, ASA Services Module for Cisco Catalyst 6500 and Cisco 7600 devices, ASA 1000V devices, Adaptive Security Virtual Appliance (aka ASAv), Firepower 9300 ASA Security Module, and ISA 3000 devices allows remote attackers to execute arbitrary code or cause a denial of service (device reload) via crafted UDP packets, aka Bug IDs CSCux29978 and CSCux42019.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
78
EG Risk 78/100CISA SSVC

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
Severity98% × 45%
Exploitation74% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
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
74%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack 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 (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

February 11, 2016

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Sep 30, 2026
🔬 Proof of concept available. No fix on record yet. Sources: cert.
generic

Execute My Packet - Exodus Intelligence

https://blog.exodusintel.com/2016/02/10/firewall-hacking/
generic🟡 PoC Available

Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160210-asa-ike
generic

Packet Storm - Human Validation

http://packetstormsecurity.com/files/137100/Cisco-ASA-Software-IKEv1-IKEv2-Buffer-Overflow.html
cert

VU#327976 - Cisco Adaptive Security Appliance (ASA) IKEv1 and IKEv2 contains a buffer overflow vulnerability

https://www.kb.cert.org/vuls/id/327976
generic🟡 PoC Available

Cisco ASA Software 8.x/9.x - IKEv1 / IKEv2 Buffer Overflow - Hardware remote Exploit

https://www.exploit-db.com/exploits/39823/
generic
http://www.securitytracker.com/id/1034997

Weakness Classification(1)

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

Data Freshness Timeline

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-39823✓ verified
    First seen May 17, 2016

    Cisco ASA Software 8.x/9.x - IKEv1 / IKEv2 Buffer Overflow

    Open source ↗
  • GitHub PoCNetSPI/asa_tools
    First seen Sep 8, 2016

    Verification tools for CVE-2016-1287

    Open source ↗
  • GitHub PoCjgajek/killasa
    First seen Feb 15, 2016

    CVE-2016-1287 vulnerability test

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2016-1287?
CVE-2016-1287 is a critical vulnerability published on February 11, 2016. Buffer overflow in the IKEv1 and IKEv2 implementations in Cisco ASA Software before 8.4(7.30), 8.7 before 8.7(1.18), 9.0 before 9.0(4.38), 9.1 before 9.1(7), 9.2 before 9.2(4.5), 9.3 before 9.3(3.7), 9.4 before 9.4(2.4), and 9.5 before 9.5(2.2) on ASA 5500 devices, ASA 5500-X devices, ASA Services…
When was CVE-2016-1287 disclosed?
CVE-2016-1287 was first published on February 11, 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-2016-1287 actively exploited?
CVE-2016-1287 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 74% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-1287?
CVE-2016-1287 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-1287?
No fix for CVE-2016-1287 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.

Dependency Blast Radius

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