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EUVD-2026-351354

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:20

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:20:53.372278+00:00",
  "id": "EUVD-2026-351354"
}

CVE-2020-3259 (GCVE-0-2020-3259)

Vulnerability from cvelistv5 – Published: 2020-05-06 16:41 – Updated: 2026-08-12 03:56

Title

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure Vulnerability

Summary

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: active Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-14 00:00 UTC

CWE

CWE-200

Assigner

cisco mitre root Scorecard

References

2 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

10 products

Vendor	Product	Version
Cisco	Cisco Adaptive Security Appliance (ASA) Software	Affected: n/a
cisco	firepower_threat_defense	Affected: 6.2.3 , < 6.2.3.16 (custom) cpe:2.3:a:cisco:firepower_threat_defense:6.2.3:::::::*
cisco	firepower_threat_defense	Affected: 6.3.0 , < 6.3.0.6 (custom) cpe:2.3:a:cisco:firepower_threat_defense:6.3.0:::::::*
cisco	firepower_threat_defense	Affected: 6.4.0 , < 6.4.0.9 (custom) cpe:2.3:a:cisco:firepower_threat_defense:6.4.0:::::::*
cisco	firepower_threat_defense	Affected: 6.5.0 , < 6.5.0.5 (custom) cpe:2.3:a:cisco:firepower_threat_defense:6.5.0:::::::*
cisco	adaptive_security_appliance_software	Affected: 9.8 , < 9.8.4.20 (custom) cpe:2.3:a:cisco:adaptive_security_appliance_software:9.8:::::::*
cisco	adaptive_security_appliance_software	Affected: 9.9 , < 9.9.2..67 (custom) cpe:2.3:a:cisco:adaptive_security_appliance_software:9.9:::::::*
cisco	adaptive_security_appliance_software	Affected: 9.10 , < 9.10.1.40 (custom) cpe:2.3:a:cisco:adaptive_security_appliance_software:9.10:::::::*
cisco	adaptive_security_appliance_software	Affected: 9.12 , < 9.12.3.9 (custom) cpe:2.3:a:cisco:adaptive_security_appliance_software:9.12:::::::*
cisco	adaptive_security_appliance_software	Affected: 9.13 , < 9.13.1.10 (custom) cpe:2.3:a:cisco:adaptive_security_appliance_software:9.13:::::::*

Date Public

2020-05-06 00:00

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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EUVD-2026-351354

CVE-2020-3259 (GCVE-0-2020-3259)

Tags

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Nomenclature

Related by attack behaviour