{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/hiper-1250gw--v3.2.7-210907-180535/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"id":"CVE-2026-18897"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["HiPER 1250GW","HiPER 1250GW (\u003c= v3.2.7-210907-180535)"],"_cs_severities":["high"],"_cs_tags":[],"_cs_type":"advisory","_cs_vendors":["UTT"],"content_html":"\u003cp\u003eThe UTT HiPER 1250GW router (firmware up to 3.2.7-210907-180535) is affected by a critical stack-based buffer overflow vulnerability, identified as CVE-2026-18895. The flaw exists within the /goform/APSecurity_5g file, where the strcpy function processes user-supplied input without proper bounds checking. An attacker can exploit this remotely by providing a specially crafted 'cipher' argument to the affected endpoint. Publicly available exploit code exists, increasing the risk of exploitation for this legacy network device. The vendor has not provided a patch to remediate this issue, leaving exposed devices susceptible to potential arbitrary code execution and system compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker performs reconnaissance to identify UTT HiPER 1250GW devices exposed to the internet.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP request targeting the /goform/APSecurity_5g endpoint.\u003c/li\u003e\n\u003cli\u003eAttacker embeds an oversized payload into the 'cipher' argument of the request query string or body.\u003c/li\u003e\n\u003cli\u003eThe web management interface processes the request and calls the unsafe strcpy function in the backend application.\u003c/li\u003e\n\u003cli\u003eThe unchecked copy operation results in a stack-based buffer overflow, overwriting adjacent memory on the device.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the overflow to hijack the instruction pointer and redirect execution flow.\u003c/li\u003e\n\u003cli\u003eAttacker executes arbitrary shellcode or payloads to gain persistent control over the device.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-18895 allows for unauthenticated remote code execution on the router, potentially granting an attacker full administrative control. This could lead to sensitive traffic interception, internal network pivoting, or complete denial-of-service for the affected facility. Given the lack of vendor patches, organizations using the HiPER 1250GW face persistent risk if the device is reachable from the public internet.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately restrict access to the web management interface of UTT HiPER 1250GW routers by moving them behind a VPN or restricting source IP addresses at the firewall.\u003c/li\u003e\n\u003cli\u003eMonitor HTTP logs for suspicious requests targeting the '/goform/APSecurity_5g' URI stem that contain unusually long 'cipher' argument values.\u003c/li\u003e\n\u003cli\u003eEvaluate the retirement or replacement of UTT HiPER 1250GW devices as they are currently unpatched and vulnerable to known public exploits (CVE-2026-18895).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-08-05T04:04:51Z","date_published":"2026-08-05T04:04:26Z","id":"https://feed.craftedsignal.io/briefs/2026-08-hiper-buffer-overflow/","summary":"A remote stack-based buffer overflow in the UTT HiPER 1250GW router, triggered via the 'cipher' parameter, allows potential arbitrary code execution due to unsafe use of strcpy.","title":"Remote Buffer Overflow Vulnerability in UTT HiPER 1250GW","url":"https://feed.craftedsignal.io/briefs/2026-08-hiper-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed - HiPER 1250GW (\u003c= V3.2.7-210907-180535)","version":"https://jsonfeed.org/version/1.1"}