Authentication bypass in NCR SelfServ ATM
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
The currency dispenser of NCR SelfSev ATMs running APTRA XFS 05.01.00 or earlier does not adequately authenticate session key generation requests from the host computer, allowing an attacker with physical access to internal ATM components to issue valid commands to dispense currency by generating a new session key that the attacker knows.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NCR | SelfServ ATM | APTRA XFS – 05.01.00 | — | No fix listed | CNA |
- SelfServ ATM VendorNCR Affected APTRA XFS – 05.01.00 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10123
- 2026-10-03 Alias added: GHSA-9fqf-7qjx-9m2h
References
Advisory 4
- https://kb.cert.org/vuls/id/116713
- https://www.ncr.com/content/dam/ncrcom/content-type/documents/NCR_Security_Alert-2018-10-S1_and_S2_Critical_Update.pdf
- https://www.ncr.com/content/dam/ncrcom/unsorted/jackpot_attacks_in_the_us_-_january_2018.pdf
- https://www.ncr.com/content/dam/ncrcom/content-type/documents/NCR_Security_Alert-2018-13_APTRA_XFS_v5.pdf
More NCR Aptra Xfs vulnerabilities
- TI-2020-07276 Buffer overflow in NCR SelfServ ATM CVSS 3.1HIGH 7.6
- TI-2020-08183 Authentication bypass in NCR SelfServ ATM CVSS 3.1HIGH 7.6
- TI-2020-08182 NCR SelfServ ATMs running APTRA XFS 04.02.01 and 05.01.00 implement 512-bit RSA… CVSS 3.1HIGH 7.6
- TI-2020-08181 Missing authentication in NCR SelfServ ATM CVSS 3.1HIGH 7.1
Sources
- CVE-2020-10123 · CVE Program
- CVE-2020-10123 · NVD
- FIRST EPSS
- GHSA-9fqf-7qjx-9m2h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences