Certain Technicolor devices have an SNMP access-control bypass, possibly involving an ISP customization in some cases.
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.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Apr 27, 2017
- Updated
- Jun 16, 2026
- EPSS
- 17.5% · 97th percentile
- CWE
- —
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Report tools
Action score
41
Plan
Add it to your regular patch cycle.
- CVSS
- 36 / 40 · 9.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 5 / 30 · 17.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| technicolor | dpc3928sl firmware | cpe:2.3:o:technicolor:dpc3928sl_firmware |
| technicolor | dpc3928sl | cpe:2.3:h:technicolor:dpc3928sl |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- technicolor dpc3928sl firmwared3928sl-p15-13-a386-c3420r55105-160127a
Same product
technicolor: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-20439Technicolor DPC3928SL D3928SL-PSIP-13-A010-c3420r55105-170214a devices allow remote attackers to discover Wi-Fi credentials via iso.3.6.1.4.39Monitor
- CVE-2018-20379Technicolor DPC3928SL D3928SL-PSIP-13-A010-c3420r55105-160428a devices allow XSS via a Cross Protocol Injection attack with setSSID of 1.3.618Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2017-05-05 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+8 d
- TodaySep 30, 2026+3443 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/bid/98092
- stringbleed.github.io/
- www.reddit.com/r/netsec/comments/67qt6u/cve_20175135_snmp_authentication_bypass/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.