CVE-2018-15439Sf200-24 Firmware Hardcoded Credentials
A vulnerability in the Cisco Small Business Switches software could allow an unauthenticated, remote attacker to bypass the user authentication mechanism of an affected device.
Published Nov 8, 2018 · Updated Nov 26, 2024
Key Facts
Patch immediately- CVE-2018-15439 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Sf200-24 Firmware (Cisco), Sf200-24fp Firmware (Cisco), Sf200-24p Firmware (Cisco) and 22 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 50% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
50%
Higher than 98.8% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
57/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
A vulnerability in the Cisco Small Business Switches software could allow an unauthenticated, remote attacker to bypass the user authentication mechanism of an affected device. The vulnerability exists because under specific circumstances, the affected software enables a privileged user account without notifying administrators of the system. An attacker could exploit this vulnerability by using this account to log in to an affected device and execute commands with full admin rights.
Cisco has not released software updates that address this vulnerability. This advisory will be updated with fixed software information once fixed software becomes available. There is a workaround to address this vulnerability.
Affected Products
115 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Sf200-24 FirmwareCisco | See advisory | n/a |
| Sf200-24fp FirmwareCisco | See advisory | n/a |
| Sf200-24p FirmwareCisco | See advisory | n/a |
| Sf200-48 FirmwareCisco | See advisory | n/a |
| Sf200-48p FirmwareCisco | See advisory | n/a |
Timeline
Publicly disclosed
Nov 8, 2018
Last updated
Nov 26, 2024
Weakness Type
- CWE-798 Use of Hard-coded Credentials
References
FAQ
Common Questions.
A vulnerability in the Cisco Small Business Switches software could allow an unauthenticated, remote attacker to bypass the user authentication mechanism of an affected device.
Affected: Sf200-24 Firmware (Cisco); Sf200-24fp Firmware (Cisco); Sf200-24p Firmware (Cisco), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2018-15439 On Your Attack Surface?
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