CVE-2021-27137
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 unau
CVSS
8.1
Alto
EPSS
—
KEV
—
Exploit Today
—
0-100
Publicado: 16 jul 2026 · Última mod.: 16 jul 2026 · CWE-121
Sin historial EPSS suficiente todavía.
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).
- securityaffairs.comhttps://securityaffairs.com/193290/uncategorized/iot-botnet-c0xmo-adds-competitor-killing-capability.html
- ssd-disclosure.comhttps://ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/
- svn.dd-wrt.comhttps://svn.dd-wrt.com/changeset/45724
- www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/c0xmo-botnet-spreads-via-dd-wrt-router-flaw-kills-rival-malware/
- www.fortinet.comhttps://www.fortinet.com/blog/threat-research/inside-cross-platform-propagation-of-new-gafgyt-variant-c0xmo
- ssd-disclosure.comhttps://ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2025-510878.6 ALT94.0%
——28Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/saveParentControlInfo. The manipulation of the argument time leads to stack-based buffer overflow.12dCVE-2025-510885.3 MED92.6%
——28Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/WifiGuestSet. The manipulation of the argument `shareSpeed` leads to stack-based buffer overflow.12dCVE-2025-510855.3 MED92.6%
——28Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/SetSysTimeCfg. The manipulation of the argument `timeZone` and `timeType` leads to stack-based buffer overflow.12dCVE-2025-606908.8 ALT89.1%
——27A stack-based buffer overflow exists in the get_merge_ipaddr function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200_v2.0.11.001_us.tar.gz). The function concatenates up to four user-supplied CGI parameters matching <parameter>_0~3 into a fixed-size buffer (a2) without bounds checking. Remote attackers can exploit this vulnerability via specially crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.12dCVE-2026-248818.1 ALT75.2%
——23In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.2dCVE-2026-503877.8 ALT75.0%
——22Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.21h