Answer in brief
CVE-2021-27137 records a High severity (CVSS 8.1) missing auth vulnerability in DD-WRT Stack-Based Buffer Overflow Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
Answer in brief
CVE-2021-27137 records a High severity (CVSS 8.1) missing auth vulnerability in DD-WRT Stack-Based Buffer Overflow Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
Missing Auth describes the vulnerability class recorded for this advisory. NVD marks CVE-2021-27137 as known exploited, so exposure review should be prioritized. This is a product-level record in the current feed, not a package-level dependency mapping.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
An issue was discovered in router/upnp/src/ssdp.c in DD-WRT before 45724. An unsafe strcpy in the UPnP handling functionality allows an unauthenticated remote attacker to send a request that would overflow an internal fixed buffer. Exploitation requires the DD-WRT user to enable UPnP (which is off by default, and only listens on internal interfaces by default). This occurs in ssdp_msearch (reachable by an M-SEARCH request).
Reported by NVD (nvd).
CVE-2021-27137 records a High severity (CVSS 8.1) missing auth vulnerability in DD-WRT Stack-Based Buffer Overflow Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
The source record marks it as known exploited.
Confirm whether the product or interface named by this advisory exists in your inventory.
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL GuardReview the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.
Missing Auth describes the vulnerability class recorded for this advisory. NVD marks CVE-2021-27137 as known exploited, so exposure review should be prioritized. This is a product-level record in the current feed, not a package-level dependency mapping.
Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.
An issue was discovered in router/upnp/src/ssdp.c in DD-WRT before 45724. An unsafe strcpy in the UPnP handling functionality allows an unauthenticated remote attacker to send a request that would overflow an internal fixed buffer. Exploitation requires the DD-WRT user to enable UPnP (which is off by default, and only listens on internal interfaces by default). This occurs in ssdp_msearch (reachable by an M-SEARCH request).
Reported by NVD (nvd).
CVE-2021-27137 records a High severity (CVSS 8.1) missing auth vulnerability in DD-WRT Stack-Based Buffer Overflow Vulnerability. The source record marks it as known exploited. No package mapping is present, so exposure must be confirmed against the affected product and deployment inventory.
The source record marks it as known exploited.
Confirm whether the product or interface named by this advisory exists in your inventory.
HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.
Explore HOL Guard