high Known exploitedREV. 01
CVE-2016-6415Cisco — key exchange requests that return memory
A security negotiation request to the key exchange server in Cisco's router software returns pieces of device memory. It spans a wide range of releases, and the leak was tooled well enough to earn a codename (BENIGNCERTAIN).
Read the risk
THE VITAL STATS- CVSS score
- 7.5/ 10 CVSS v3.1
- EPSS probability
- 88% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2016-09-19
- Added to KEV
- 2023-05-19
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- collection
- MITRE ATT&CK
- —
- Severity
- high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attacker needsNetwork access to the device's key exchange service.
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisorytools.cisco.comtools.cisco.com
- 04Writeupsecurityfocus.comsecurityfocus.com
- 05Writeupsecuritytracker.comsecuritytracker.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.