CVE-2022-31481
CVE-2022-31481 is a critical-severity vulnerability in Carrier Lenels2 Lnl-4420 Firmware with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Carrier Lenels2 Lnl-4420 Firmware
- Published:
- Last modified:
Description
An unauthenticated attacker can send a specially crafted update file to the device that can overflow a buffer. This vulnerability impacts products based on HID Mercury Intelligent Controllers LP1501, LP1502, LP2500, LP4502, and EP4502 which contain firmware versions prior to 1.302 for the LP series and 1.296 for the EP series. The overflowed data can allow the attacker to manipulate the “normal” code execution to that of their choosing. An attacker with this level of access on the device can monitor all communications sent to and from this device, modify onboard relays, change configuration files, or cause the device to become unstable.
Frequently asked questions
- What is CVE-2022-31481?
- An unauthenticated attacker can send a specially crafted update file to the device that can overflow a buffer. This vulnerability impacts products based on HID Mercury Intelligent Controllers LP1501, LP1502, LP2500, LP4502, and EP4502 which contain firmware versions prior to 1.302 for the LP series and 1.296 for the EP series. The overflowed data can allow the attacker to manipulate the “normal” code execution to that of their choosing. An attacker with this level of access on the device can monitor all communications sent to and from this device, modify onboard relays, change configuration files, or cause the device to become unstable.
- How severe is CVE-2022-31481?
- CVE-2022-31481 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-31481 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-31481?
- CVE-2022-31481 primarily affects Carrier Lenels2 Lnl-4420 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-31481?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2022-31481 published?
- CVE-2022-31481 was published on 2022-06-06 and last updated on 2026-06-17.
References
Affected products (14)
- cpe:2.3:o:hidglobal:lp1501_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:hidglobal:lp1502_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:hidglobal:lp2500_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:hidglobal:lp4502_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:hidglobal:ep4502_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_lnl-4420_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_lnl-x2210_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_lnl-x2220_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_lnl-x3300_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_lnl-x4420_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_s2-lp-1501_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_s2-lp-1502_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_s2-lp-2500_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:carrier:lenels2_s2-lp-4502_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Carrier Lenels2 Lnl-4420 Firmware
- CVE-2022-31479 — Critical (CVSS 9.6): An unauthenticated attacker can update the hostname with a specially crafted name that will allow for shell commands to…
- CVE-2022-31483 — Critical (CVSS 9.1): An authenticated attacker can upload a file with a filename including “..” and “/” to achieve the ability to…
- CVE-2022-31486 — High (CVSS 8.8): An authenticated attacker can send a specially crafted route to the “edit_route.cgi” binary and have it execute…
- CVE-2022-31484 — High (CVSS 7.5): An unauthenticated attacker can send a specially crafted network packet to delete a user from the web interface. This…
- CVE-2022-31482 — High (CVSS 7.5): An unauthenticated attacker can send a specially crafted unauthenticated HTTP request to the device that can overflow a…
- CVE-2022-31480 — High (CVSS 7.5): An unauthenticated attacker could arbitrarily upload firmware files to the target device, ultimately causing a…
All CVEs affecting Carrier Lenels2 Lnl-4420 Firmware →
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