CVE-2018-0101

CRITICALNVD 10.010.0
EchelonGraph scoreMEDIUM confidence

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

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High exploitation likelihood — EPSS 87%
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 87%CVSS: 10.0Exploit: Public PoCExposed services: Not assessed

No fix has been recorded since the CVE record was published in 2018 — use a compensating control (WAF / firewall / segmentation) and check the vendor's advisory.

A vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to an attempt to double free a region of memory when the webvpn feature is enabled on the Cisco ASA device. An attacker could exploit this vulnerability by sending multiple, crafted XML packets to a webvpn-configured interface on the affected system. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system, or cause a reload of the affected device. This vulnerability affects Cisco ASA Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, ASA 1000V Cloud Firewall, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4110 Security Appliance, Firepower 9300 ASA Security Module, Firepower Threat Defense Software (FTD). Cisco Bug IDs: CSCvg35618.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
95
EG Risk 95/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity100% × 45%
Impact severity (EG Severity): CVSS 10.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation87% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 has been recorded since the CVE record was published in 2018. 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 check the vendor's advisory for a fix.
EPSS PROB
87%
EPSS %ILE
99th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (10.0): severity, escalated by confirmed exploitation. This CVE's 10.0 is its impact severity (EG Severity), not escalated.

EG Severity
10.0 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
87% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-22). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix has been recorded since the CVE record was published in 2018. 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 check the vendor's advisory for a fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

January 29, 2018

Last Modified

August 11, 2026

Advisory Details (6)

Auto-updated Oct 21, 2026
No fix on record since 2018.
Web page

Cisco ASA CVE-2018-0101 Crash PoC - Pastebin.com

https://pastebin.com/YrBcG2Ln
Web page

Thoughts on the handling CVE-2018-0101 / Cisco Bug CSCvg35618 – I CAN'T HACK IT …OR CAN I?

https://icanthackit.wordpress.com/2018/01/30/thoughts-on-the-handling-cve-2018-0101-cisco-bug-cscvg35618/
Web page

CVE-2018-0101 - PSIRT.COM

http://www.securityfocus.com/bid/102845
Web page

Cisco ASA - Crash (PoC) - Hardware dos Exploit

https://www.exploit-db.com/exploits/43986/
Web page

Cisco Adaptive Security Appliance Remote Code Execution and Denial of Service Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180129-asa1

Vendor Advisories for CVE-2018-0101(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 17× in last 7d / 36× 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.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 15 repeat rows among the latest 94 are merged into the row they repeat.

  1. 2026-10-23 05:08 UTCEG score recompute
  2. 2026-10-23 05:08 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  3. 2026-10-22 06:01 UTCEG score recompute
  4. 2026-10-22 06:01 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  5. 2026-10-21 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  6. 2026-10-21 06:54 UTCEG score recompute
  7. 2026-10-21 06:54 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  8. 2026-10-20 07:49 UTCEG score recompute
  9. 2026-10-20 07:49 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  10. 2026-10-19 16:26 UTCEPSS rescoreEPSS 87% · 99th percentile
  11. 2026-10-19 08:42 UTCEG score recompute
  12. 2026-10-19 08:41 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  13. 2026-10-18 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  14. 2026-10-18 09:36 UTCEG score recompute
  15. 2026-10-18 09:36 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  16. 2026-10-17 10:30 UTCEG score recompute
  17. 2026-10-17 10:29 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  18. 2026-10-16 16:29 UTCEPSS rescoreEPSS 87% · 99th percentile
  19. 2026-10-16 11:22 UTCEG score recompute
  20. 2026-10-16 11:22 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  21. 2026-10-15 11:53 UTCEG score recompute
  22. 2026-10-15 11:52 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  23. 2026-10-14 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  24. 2026-10-14 07:22 UTCEG score recompute
  25. 2026-10-14 07:22 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
Show 54 more
  1. 2026-10-13 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  2. 2026-10-13 02:37 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  3. 2026-10-12 20:23 UTCEG score recompute
  4. 2026-10-12 16:28 UTCEPSS rescoreEPSS 87% · 99th percentile
  5. 2026-10-12 00:46 UTCEG score recompute
  6. 2026-10-10 19:55 UTCEPSS rescoreEPSS 87% · 99th percentile
  7. 2026-10-06 15:12 UTCEPSS rescoreEPSS 87% · 99th percentile
  8. 2026-09-30 09:49 UTCEG score recompute
  9. 2026-09-26 15:53 UTCEPSS rescoreEPSS 87% · 99th percentile
  10. 2026-09-26 00:19 UTCEPSS rescoreEPSS 87% · 99th percentile
  11. 2026-09-24 13:59 UTCEPSS rescoreEPSS 87% · 99th percentile
  12. 2026-09-21 20:27 UTCEPSS rescoreEPSS 73% · 99th percentile
  13. 2026-09-17 19:22 UTCEPSS rescoreEPSS 87% · 99th percentile
  14. 2026-09-12 14:56 UTCEPSS rescoreEPSS 87% · 99th percentile
  15. 2026-09-05 15:24 UTCEPSS rescoreEPSS 73% · 99th percentile
  16. 2026-09-04 13:56 UTCEPSS rescoreEPSS 87% · 99th percentile
  17. 2026-09-02 14:07 UTCEPSS rescoreEPSS 87% · 99th percentile
  18. 2026-08-30 19:13 UTCEPSS rescoreEPSS 87% · 99th percentile
  19. 2026-08-28 21:36 UTCEPSS rescoreEPSS 73% · 99th percentile
  20. 2026-08-27 14:21 UTCEPSS rescoreEPSS 87% · 99th percentile
  21. 2026-08-26 14:41 UTCEPSS rescoreEPSS 87% · 99th percentile
  22. 2026-08-19 16:59 UTCEPSS rescoreEPSS 87% · 99th percentile
  23. 2026-08-16 02:10 UTCEPSS rescoreEPSS 87% · 99th percentile
  24. 2026-08-11 20:00 UTCEG score recompute
  25. 2026-08-11 20:00 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  26. 2026-07-30 16:24 UTCEPSS rescoreEPSS 87% · 99th percentile
  27. 2026-07-23 01:31 UTCEG score recompute
  28. 2026-07-22 22:11 UTCEG score recompute
  29. 2026-07-22 14:04 UTCEPSS rescoreEPSS 87% · 99th percentile
  30. 2026-07-20 17:04 UTCEPSS rescoreEPSS 87% · 99th percentile
  31. 2026-07-15 16:54 UTCEPSS rescoreEPSS 87% · 99th percentile
  32. 2026-07-13 22:26 UTCEPSS rescoreEPSS 87% · 99th percentile
  33. 2026-07-12 05:43 UTCEPSS rescoreEPSS 87% · 99th percentile
  34. 2026-07-11 08:24 UTCEPSS rescoreEPSS 87% · 99th percentile
  35. 2026-07-04 06:28 UTCEPSS rescoreEPSS 87% · 99th percentile
  36. 2026-07-01 15:03 UTCEPSS rescoreEPSS 87% · 99th percentile
  37. 2026-06-27 03:06 UTCEPSS rescoreEPSS 87% · 99th percentile
  38. 2026-06-24 14:02 UTCEPSS rescoreEPSS 87% · 99th percentile
  39. 2026-06-23 21:30 UTCEPSS rescoreEPSS 87% · 99th percentile
  40. 2026-06-17 17:50 UTCEPSS rescoreEPSS 87% · 99th percentile
  41. 2026-06-15 17:45 UTCEPSS rescoreEPSS 87% · 99th percentile
  42. 2026-06-13 22:57 UTCEPSS rescoreEPSS 93% · 99th percentile
  43. 2026-06-12 23:09 UTCEPSS rescoreEPSS 93% · 99th percentile
  44. 2026-06-11 13:57 UTCEPSS rescoreEPSS 93% · 99th percentile
  45. 2026-06-10 22:15 UTCEPSS rescoreEPSS 93% · 99th percentile
  46. 2026-06-08 14:14 UTCEPSS rescoreEPSS 93% · 99th percentile
  47. 2026-06-05 22:44 UTCEPSS rescoreEPSS 93% · 99th percentile
  48. 2026-05-31 00:14 UTCEPSS rescoreEPSS 93% · 99th percentile
  49. 2026-05-29 13:41 UTCEPSS rescoreEPSS 93% · 99th percentile
  50. 2026-05-28 13:42 UTCEPSS rescoreEPSS 93% · 99th percentile
  51. 2026-05-28 12:03 UTCEG score recompute
  52. 2026-05-28 12:03 UTCGHSA enrichmentGHSA-gxj8-6mjh-32m2 · GitHub severity CRITICAL · GitHub CVSS 10.0
  53. 2026-05-27 13:38 UTCEPSS rescoreEPSS 93% · 99th percentile
  54. 2026-05-23 02:35 UTCOSV refresh

Publicly available exploits

(3 references)

Public exploit code is referenced for this CVE (1 Exploit-DB entry, 2 GitHub PoCs). No fix has been recorded since the CVE record was published in 2018. If the vendor still supports the product, apply the fixed version it names; if it no longer does, isolate the affected system.

  • GitHub PoCCymmetria/ciscoasa_honeypot
    Published Feb 8, 2018

    A low interaction honeypot for the Cisco ASA component capable of detecting CVE-2018-0101, a DoS and remote code execution vulnerability.

    Open source ↗
  • Exploit-DBEDB-43986
    Published Feb 7, 2018

    Cisco ASA - Crash (PoC)

    Open source ↗
  • GitHub PoC1337g/CVE-2018-0101-DOS-POC
    Published Feb 7, 2018
    Open source ↗

Frequently asked(5)

What is CVE-2018-0101?
CVE-2018-0101 is a critical-severity vulnerability; its CVE record was published on January 29, 2018. A vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to an attempt to double free a…
When was CVE-2018-0101 made public?
CVE-2018-0101 was made public on January 29, 2018: that is the date its CVE record's CNA, Cisco Systems, Inc., gives for when the vulnerability was made public. The CVE record itself was published on January 29, 2018. EchelonGraph's copy of the record carries a last-modified date of August 11, 2026; the record at its source may have been updated since.
Is CVE-2018-0101 actively exploited?
CVE-2018-0101 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-0101?
CVE-2018-0101 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2018-0101?
No fix for CVE-2018-0101 has been recorded since its CVE record was published in 2018. 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 check the vendor's advisory for a fix. The vendor advisories EchelonGraph has for CVE-2018-0101 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2018-0101

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