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Vulnerability record · CVE-2017-5135 · published 27 April 2017

CVE-2017-5135: Technicolor dpc3928sl firmware vulnerability

Technicolor · Dpc3928sl Firmware

Certain Technicolor devices have an SNMP access-control bypass, possibly involving an ISP customization in some cases. The Technicolor (formerly Cisco) DPC3928SL with firmware D3928SL-P15-13-A386-c3420r55105-160127a could be reached by any SNMP community string from the Internet; also, you can write in the MIB because it provides write properties, aka Stringbleed. NOTE: the string-bleed/StringBleed-CVE-2017-5135 GitHub repository is not a valid reference as of 2017-04-27; it contains Trojan horse code purported to exploit this vulnerability.

9.1 CVSS 3.0 Critical EPSS 18% · top 3.0%
9.1CVSS 3.0 base score, v2 6.4
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Certain Technicolor devices have an SNMP access-control bypass, possibly involving an ISP customization in some cases. The Technicolor (formerly Cisco) DPC3928SL with firmware D3928SL-P15-13-A386-c3420r55105-160127a could be reached by any SNMP community string from the Internet; also, you can write in the MIB because it provides write properties, aka Stringbleed. NOTE: the string-bleed/StringBleed-CVE-2017-5135 GitHub repository is not a valid reference as of 2017-04-27; it contains Trojan horse code purported to exploit this vulnerability.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/98092 Third Party AdvisoryVDB Entry
https://stringbleed.github.io/ Technical DescriptionThird Party Advisory
https://www.reddit.com/r/netsec/comments/67qt6u/cve_20175135_snmp_authentication_bypass/ Press/Media CoverageThird Party Advisory
http://www.securityfocus.com/bid/98092 Third Party AdvisoryVDB Entry
https://stringbleed.github.io/ Technical DescriptionThird Party Advisory
https://www.reddit.com/r/netsec/comments/67qt6u/cve_20175135_snmp_authentication_bypass/ Press/Media CoverageThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

Source: NIST National Vulnerability Database (record CVE-2017-5135), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.