Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability
- Severity
- High7.5CVSS 3.1, High
- EPSS
- 88%
- Published
- 19 Sept 2016
- Updated
- 17 Jun 2026
Description
Title, description and vendor guidance are quoted from the source records.
The server IKEv1 implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.6, IOS XE through 3.18S, IOS XR 4.3.x and 5.0.x through 5.2.x, and PIX before 7.0 allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request, aka Bug IDs CSCvb29204 and CSCvb36055 or BENIGNCERTAIN.
Weakness: CWE-200
Known exploited
Added to CISA KEV on 19 May 2023
Federal remediation due date: 9 Jun 2023
Required action: Apply updates per vendor instructions.
Exploit prediction
88% probability of exploitation in the next 30 days (percentile 100%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Patcharo shows this vulnerability for information but does not match versions for this product yet.
- n/a n/a · n/a
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Cisco (CVE record)
- Cisco (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 27 Sept 2026, 23:42 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC