CVE-2017-9521 Other in n/a

Critical 9.8 Published 31 Jul 2017 Updated 5 Aug 2024

Remote attackers can execute arbitrary code on specific Cisco and Arris cable modems via an exposed service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-9521?

CVE-2017-9521 is a critical vulnerability in n/a, published on 31 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST); Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST); Cisco DPC3939B (firmware version dpc3939b-v303r204217-150321a-CMCST); Cisco DPC3941T (firmware version DPC3941_2.5s3_PROD_sey); and Arris TG1682G (eMTA&DOCSIS version 10.0.132.SIP.PC20.CT, software version TG1682_2.2p7s2_PROD_sey) devices allows remote attackers to execute arbitrary code via a specific (but unstated) exposed service. NOTE: the scope of this CVE does NOT include the concept of "Unnecessary Services" in general; the scope is only a single service that is unnecessarily exposed, leading to remote code execution. The details of that service might be disclosed at a later date.

Which versions are affected by CVE-2017-9521?

It affects 4 products.

Products include Cisco Dpc3939 Firmware, Cisco Dpc3939b Firmware, Cisco Dpc3941t Firmware, Commscope Arris Tg1682g Firmware.

How do I fix CVE-2017-9521?

No fix has been published for CVE-2017-9521 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-9521 being exploited?

There is no known exploitation of CVE-2017-9521 in the wild and no public exploit code.

Sources

Also known as GHSA-7rpj-hpvp-vvv6.