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TI-2019-01367 Aliases CVE-2019-1741GHSA-p3fr-r42j-9w52

Cisco IOS XE Software Encrypted Traffic Analytics Denial of Service Vulnerability

Priority MEDIUM 44CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A vulnerability in the Cisco Encrypted Traffic Analytics (ETA) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a logic error that exists when handling a malformed incoming packet, leading to access to an internal data structure after it has been freed. An attacker could exploit this vulnerability by sending crafted, malformed IP packets to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02764 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IOS XE Software3.2.0JA; 16.6.1; 16.6.2; 16.6.3; 16.7.1; 16.7.1a; 16.7.1b; 16.8.1; 16.8.1a; 16.8.1b; 16.8.1s; 16.8.1c; 16.8.1d; 16.8.1e—No fix listedCNA
  • Cisco IOS XE Software VendorCisco Affected 3.2.0JA; 16.6.1; 16.6.2; 16.6.3; 16.7.1; 16.7.1a; 16.7.1b; 16.8.1; 16.8.1a; 16.8.1b; 16.8.1s; 16.8.1c; 16.8.1d; 16.8.1e Fixed in — No fix listed CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:*3.2.0jaVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*16.6.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:*16.6.2VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.6.3:*:*:*:*:*:*:*16.6.3VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:*16.7.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1a:*:*:*:*:*:*:*16.7.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1b:*:*:*:*:*:*:*16.7.1bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*16.8.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:*16.8.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1b:*:*:*:*:*:*:*16.8.1bVulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:* Versions 3.2.0ja Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:* Versions 16.6.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:* Versions 16.6.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.6.3:*:*:*:*:*:*:* Versions 16.6.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:* Versions 16.7.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1a:*:*:*:*:*:*:* Versions 16.7.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1b:*:*:*:*:*:*:* Versions 16.7.1b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:* Versions 16.8.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:* Versions 16.8.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1b:*:*:*:*:*:*:* Versions 16.8.1b Vulnerable ·Cisco
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:16.8.1c:*:*:*:*:*:*:*16.8.1cVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1d:*:*:*:*:*:*:*16.8.1dVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1e:*:*:*:*:*:*:*16.8.1eVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:*16.8.1sVulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1c:*:*:*:*:*:*:* Versions 16.8.1c Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1d:*:*:*:*:*:*:* Versions 16.8.1d Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1e:*:*:*:*:*:*:* Versions 16.8.1e Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:* Versions 16.8.1s Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1741
  2. 2026-10-03 Alias added: GHSA-p3fr-r42j-9w52

References

Patch 1

  • TI-2023-06904 Cisco is providing an update for the ongoing investigation into observed exploitation of… KEVCVSS 3.1CRITICAL 10.0
  • TI-2018-00122 Memory corruption in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04497 Memory corruption in Cisco IOS XE Software KEVCVSS 3.1HIGH 8.8
See all 561 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences