CVE-2019-11856

3.3 LOW 1.0% exploit odds Fix listed

What it is

A nonce reuse vulnerability exists in the ACEView service of ALEOS before 4.13.0, 4.9.5, and 4.4.9 allowing message replay. Captured traffic to the ACEView service can be replayed to other gateways sharing the same credentials.

At a glance

Exploitability: Can be exploited over the network with an admin-level account. Limited direct impact.
Exploit odds: 1.0% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-08-21 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:13 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.0% in the next 30 days (EPSS).
Severity: 3.3 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-08-21 19:15 UTC
Last modified: 2026-06-17 02:13 UTC
Exploit probability: 1.0% · EPSS, next 30 days
Weakness: CWE-294
Record status: Modified

Affected

Sierrawireless Aleos ≤ 4.12.0
Sierrawireless Aleos ≤ 4.9.4
Sierrawireless Aleos ≤ 4.4.8

Attack profile CVSS 3.1 · 3.3

Attack vector: Network
Complexity: High
Privileges needed: High
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: Low

Raw vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record