CVE-2021-40405
CVE-2021-40405 is a medium-severity vulnerability in Reolink Rlc-410w Firmware with a CVSS 3.x base score of 6.5. 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-404.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (67th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-404
- Affected product: Reolink Rlc-410w Firmware
- Published:
- Last modified:
Description
A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.
Frequently asked questions
- What is CVE-2021-40405?
- A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.
- How severe is CVE-2021-40405?
- CVE-2021-40405 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-40405 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-40405?
- CVE-2021-40405 affects Reolink Rlc-410w Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-40405?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-40405 published?
- CVE-2021-40405 was published on 2022-04-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:reolink:rlc-410w_firmware:3.0.0.136_20121102:*:*:*:*:*:*:*
More vulnerabilities in Reolink Rlc-410w Firmware
- CVE-2022-21217 — Critical (CVSS 9.8): An out-of-bounds write vulnerability exists in the device TestEmail functionality of reolink RLC-410W…
- CVE-2021-40409 — Critical (CVSS 9.8): An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W…
- CVE-2021-40408 — Critical (CVSS 9.8): An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W…
- CVE-2021-40416 — High (CVSS 8.8): An incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink…
- CVE-2022-21796 — High (CVSS 8.2): A memory corruption vulnerability exists in the netserver parse_command_list functionality of reolink RLC-410W…
- CVE-2021-44419 — High (CVSS 7.7): A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W…
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