CVE-2018-0101

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

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, ghsa, nvd
Elevated
10.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 87%
CISA-KEV: Not listedEPSS: 87%CVSS: 10.0Exploit: NoneExposed: 0

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

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
10.0(medium)
EG Risk
95(Track)
EG Risk 95/100SSVC: 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
Severity100% × 45%
Exploitation87% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.7%
KEV
Not listed

Published

January 29, 2018

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Jul 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

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

https://pastebin.com/YrBcG2Ln
generic

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/
generic
http://www.securitytracker.com/id/1040292
generic
http://www.securityfocus.com/bid/102845
generic🟡 PoC Available

Cisco ASA - Crash (PoC) - Hardware dos Exploit

https://www.exploit-db.com/exploits/43986/
generic

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

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 19× 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. 2026-07-23 01:31 UTCEG score recompute
  2. 2026-07-22 22:11 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-20 17:04 UTCEPSS rescore
  5. 2026-07-20 17:04 UTCEPSS rescore
  6. 2026-07-15 16:55 UTCEPSS rescore
  7. 2026-07-15 16:54 UTCEPSS rescore
  8. 2026-07-13 22:26 UTCEPSS rescore
  9. 2026-07-13 22:26 UTCEPSS rescore
  10. 2026-07-12 05:43 UTCEPSS rescore
  11. 2026-07-11 08:24 UTCEPSS rescore
  12. 2026-07-04 06:28 UTCEPSS rescore
  13. 2026-07-04 06:28 UTCEPSS rescore
  14. 2026-07-01 15:03 UTCEPSS rescore
  15. 2026-06-27 03:06 UTCEPSS rescore
  16. 2026-06-24 14:02 UTCEPSS rescore
  17. 2026-06-24 14:02 UTCEPSS rescore
  18. 2026-06-23 21:30 UTCEPSS rescore
  19. 2026-06-23 21:30 UTCEPSS rescore
  20. 2026-06-17 17:50 UTCEPSS rescore
  21. 2026-06-15 17:45 UTCEPSS rescore
  22. 2026-06-13 22:58 UTCEPSS rescore
  23. 2026-06-13 22:57 UTCEPSS rescore
  24. 2026-06-12 23:09 UTCEPSS rescore
  25. 2026-06-12 23:09 UTCEPSS rescore
Show 16 more
  1. 2026-06-11 13:57 UTCEPSS rescore
  2. 2026-06-10 22:15 UTCEPSS rescore
  3. 2026-06-08 14:14 UTCEPSS rescore
  4. 2026-06-08 14:14 UTCEPSS rescore
  5. 2026-06-05 22:44 UTCEPSS rescore
  6. 2026-06-05 22:44 UTCEPSS rescore
  7. 2026-05-31 00:14 UTCEPSS rescore
  8. 2026-05-31 00:14 UTCEPSS rescore
  9. 2026-05-29 13:41 UTCEPSS rescore
  10. 2026-05-28 13:42 UTCEPSS rescore
  11. 2026-05-28 13:42 UTCEPSS rescore
  12. 2026-05-28 12:03 UTCEG score recompute
  13. 2026-05-28 12:03 UTCGHSA enrichment
  14. 2026-05-27 13:38 UTCEPSS rescore
  15. 2026-05-27 13:38 UTCEPSS rescore
  16. 2026-05-23 02:35 UTCOSV refresh

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.

  • GitHub PoCCymmetria/ciscoasa_honeypot
    First seen 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
    First seen Feb 7, 2018

    Cisco ASA - Crash (PoC)

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-0101?
CVE-2018-0101 is a critical vulnerability 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 disclosed?
CVE-2018-0101 was first published in the National Vulnerability Database on January 29, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-0101 actively exploited?
CVE-2018-0101 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0101, 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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