No exploitation reported

CVE-2022-20697

No exploitation reported by the sources we read.

Published2022-04-15
WeaknessCWE-691 · CWE-772

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability in the web services interface of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper resource management in the HTTP server code. An attacker could exploit this vulnerability by sending a large number of HTTP requests to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Timeline

dates in UTC

2022-04-1515:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-20697?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-20697?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco ios

Branch	Affected	Fixed in	Source
15.1	= 15.1\(3\)svr1	no fix published	NVD
15.1	= 15.1\(3\)svr2	no fix published	NVD
15.1	= 15.1\(3\)svr3	no fix published	NVD
15.1	= 15.1\(3\)svs	no fix published	NVD
15.1	= 15.1\(3\)svs1	no fix published	NVD
15.1	= 15.1\(3\)svt1	no fix published	NVD
15.1	= 15.1\(3\)svt2	no fix published	NVD
15.1	= 15.1\(3\)svt3	no fix published	NVD
15.1	= 15.1\(3\)svu1	no fix published	NVD
15.1	= 15.1\(3\)svu2	no fix published	NVD
15.1	= 15.1\(3\)svu10	no fix published	NVD
15.1	= 15.1\(3\)svv1	no fix published	NVD

Cisco ios xe

Branch	Affected	Fixed in	Source
3.11	= 3.11.3ae	no fix published	NVD
3.11	= 3.11.3e	no fix published	NVD
3.11	= 3.11.4e	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-11-06
OpenCVESSVC decisionnone—
CNACVSS 3.18.6read 2026-10-23
NVDCVSS 3.18.6read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
CNAweakness (CWE)CWE-691read 2026-10-23
NVDweakness (CWE)CWE-772read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Published: 2022-04-15
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-20697?

Is CVE-2022-20697 actively exploited?

Active exploitation of CVE-2022-20697 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-20697?

CVE-2022-20697 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

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