CVE-2022-0902· NVD / CVE Program· CNA ABB

ABB Flow Computer and Remote Controllers Path Traversal Vulnerability in Totalflow TCP protocol can lead to root access

Noroxi assessment

Priority: Plan (action score 44/100)

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: 16.9% (FIRST EPSS); higher than 97% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Add it to your regular patch cycle. 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

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in flow computer and remote controller products of ABB ( RMC-100 (Standard), RMC-100-LITE, XIO, XFCG5 , XRCG5 , uFLOG5 , UDC) allows an attacker who successfully exploited this vulnerability could insert and run arbitrary code in an affected system node.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded

BDU:2023-00170

Published: Jul 21, 2022
Updated: Jun 17, 2026
EPSS: 16.9% · 97th percentile
CWE: CWE-22

Report tools

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 5 / 30 · 16.9%

CNA vs NVD score

NVD: 9.8
CNA · ABB: 8.1; 1.7 point gap

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

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
abb	rmc-100 firmware	cpe:2.3:o:abb:rmc-100_firmware
abb	rmc-100	cpe:2.3:h:abb:rmc-100
abb	rmc-100-lite firmware	cpe:2.3:o:abb:rmc-100-lite_firmware
abb	rmc-100-lite	cpe:2.3:h:abb:rmc-100-lite
abb	xio firmware	cpe:2.3:o:abb:xio_firmware
abb	xio	cpe:2.3:h:abb:xio
abb	xfcg5 firmware	cpe:2.3:o:abb:xfcg5_firmware
abb	xfcg5	cpe:2.3:h:abb:xfcg5
abb	xrcg5 firmware	cpe:2.3:o:abb:xrcg5_firmware
abb	xrcg5	cpe:2.3:h:abb:xrcg5
abb	uflog5 firmware	cpe:2.3:o:abb:uflog5_firmware
abb	uflog5	cpe:2.3:h:abb:uflog5

and 2 more

Affected versions

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

abb rmc-100 firmwarebefore 2105457-037
abb rmc-100-lite firmwarebefore 2106229-011
abb udc firmwarebefore 2106177-007
abb uflog5 firmwarebefore 2105298-024
abb xfcg5 firmwarebefore 2105805-016
abb xio firmwarebefore 2106198-008
abb xrcg5 firmwarebefore 2105864-016

Versions reported by the vendor

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

ABB RMC-100 (Standard)
- unspecified and later · before 2105457-037affected
ABB RMC-100-LITE
- unspecified and later · before 2106229-011affected
ABB UDC
- unspecified and later · before 2106177-007affected
ABB uFLOG5
- unspecified and later · before 2105298-024affected
ABB XFCG5
- unspecified and later · before 2105805-016affected
ABB XIO
- unspecified and later · before 2106198-008affected
ABB XRCG5
- unspecified and later · before 2105864-016affected

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.

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

Vera MensClaroty Research for helping to identify the vulnerabilities and protecting our customers.

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

ABB Information Systems LtdHackerOne · disclosure only (VDP)

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is 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: Network
Attack complexity: Low
Privileges required: None
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:N/AC:L/PR:N/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

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Change log

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

References

search.abb.com/library/Download.aspx?DocumentID=9AKK108467A0927&LanguageCode=en&DocumentPartId=&Action=Launch&_ga

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

All records