CVE-2015-6418

medium

Published 2015-12-13 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

4.3

Description

The random-number generator on Cisco Small Business RV routers 4.x and SA500 security appliances 2.2.07 does not have sufficient entropy, which makes it easier for remote attackers to determine a TLS key pair via unspecified computations upon handshake key-exchange data, aka Bug ID CSCus15224.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
cisco	rv016_multi-wan_vpn_firmware	`4.0.0.7`
cisco	rv016_multi-wan_vpn_firmware	`4.0.2.8`
cisco	rv016_multi-wan_vpn_firmware	`4.0.5.0`
cisco	rv042_dual_wan_vpn_router_firmware	`4.0.2.8`
cisco	rv042g_dual_gigabit_wan_vpn_firmware	`4.0.0.7`
cisco	rv042g_dual_gigabit_wan_vpn_firmware	`4.2.2.7`
cisco	rv042g_dual_gigabit_wan_vpn_firmware	`4.2.2.8`
cisco	rv082_dual_wan_vpn_router_firmware	`4.0.0.7`
cisco	rv082_dual_wan_vpn_router_firmware	`4.0.2.8`

References

CWEs

CWE-200

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.