CVE-2017-9487: cisco dpc3939_firmware
CVSS: 5.9v3.0MediumModified
Published 31-07-2017Last modified 05-08-2024
Vulnerability summary
CVE-2017-9487 is a medium (CVSS 5.9) vulnerability in cisco dpc3939_firmware. EPSS estimates a 1.17% chance of exploitation in the next 30 days, higher than 67% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.9/10
010
Medium · v3.0 (NVD)EPSS score
1.17%
0%100%
Low · -0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 31-07-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to discover a WAN IPv6 IP address by leveraging knowledge of the CM MAC address.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.9Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.17%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
-0.06 pp
From 1.23% on 21-09-2026
21-09-202621-10-2026
EPSS score1.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCabletap
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Cisco2 products
- dpc3939_firmwaredpc3939-p20-18-v303r20421746-170221a-cmcst
- dpc3941t_firmwaredpc3941_2.5s3_prod_sey
1 vendor · 2 products
References
1 links- github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-30.wan0-ipv6-cm-mac.txtX Refsource MISCExploitThird Party Advisory