NVD / CVE Program· CNA cisco

CVE-2022-20677: Cisco IOx Application Hosting Environment Vulnerabilities

Noroxi assessment

Priority: Monitor (action score 26/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.64% (FIRST EPSS); higher than 50.8% of all records.
Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Multiple vulnerabilities in the Cisco IOx application hosting environment on multiple Cisco platforms could allow an attacker to inject arbitrary commands into the underlying host operating system, execute arbitrary code on the underlying host operating system, install applications without being authenticated, or conduct a cross-site scripting (XSS) attack against a user of the affected software. For more information about these vulnerabilities, see the Details section of this advisory.

MediumCVSS 6.7 · v3.1—No exploit No fix recorded

BDU:2022-02484

Published: Apr 15, 2022
Updated: Jun 17, 2026
EPSS: 0.6% · 50th percentile
CWE: CWE-22

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.6%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 6.7
CNA · cisco: 5.5; 1.2 point gap

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
cisco	ios	cpe:2.3:o:cisco:ios
cisco	1100-4g integrated services router	cpe:2.3:h:cisco:1100-4g_integrated_services_router
cisco	1100-6g integrated services router	cpe:2.3:h:cisco:1100-6g_integrated_services_router
cisco	1101 integrated services router	cpe:2.3:h:cisco:1101_integrated_services_router
cisco	1109 integrated services router	cpe:2.3:h:cisco:1109_integrated_services_router
cisco	1111x integrated services router	cpe:2.3:h:cisco:1111x_integrated_services_router
cisco	111x integrated services router	cpe:2.3:h:cisco:111x_integrated_services_router
cisco	1120 integrated services router	cpe:2.3:h:cisco:1120_integrated_services_router
cisco	1131 integrated services router	cpe:2.3:h:cisco:1131_integrated_services_router
cisco	1160 integrated services router	cpe:2.3:h:cisco:1160_integrated_services_router
cisco	4221 integrated services router	cpe:2.3:h:cisco:4221_integrated_services_router
cisco	8101-32fh	cpe:2.3:h:cisco:8101-32fh

and 50 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco ios17.6.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.

Cisco Cisco IOS
- n/aaffected

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2018-0171A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attackerKEV
99Now
CVE-2017-3881A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unautheKEV
99Now
CVE-2017-6736The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow KEV
86Now

Published before and after this one in the same product

← EarlierCVE-2021-34705Sep 22, 2021 · Cisco IOS and IOS XE Software FXO Interface Destination Pattern Bypass Vulnerability
21Monitor
← EarlierCVE-2022-20661Apr 15, 2022 · Cisco Catalyst Digital Building Series Switches and Cisco Catalyst Micro Switches Vulnerabilities
18Monitor
Later →CVE-2022-20697Apr 15, 2022 · Cisco IOS and IOS XE Software Web Services Denial of Service Vulnerability
34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-22-0317 · Apr 14, 2022(Cisco Güvenlik Güncellemesi)

All national notices →

Technical details

Attack conditions

Someone with local access to the system can trigger it.
Administrator privileges are required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: High
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-yuXQ6hFj

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records