CHARX SEC-3000: Out-of-bounds Read
CVE-2024-26000 is a high-severity out-of-bounds read vulnerability in CHARX SEC-3000 from Phoenix Contact, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected CHARX SEC-3000 versions: 1.5.0 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.81% chance of exploitation within 30 days, higher than 57% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Charx Sec-3000 Firmware to 1.5.1 or a later version.
- Update Charx Sec-3050 Firmware to 1.5.1 or a later version.
- Update Charx Sec-3100 Firmware to 1.5.1 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| PHOENIX CONTACT | CHARX SEC-3000 | 1.5.0 and earlier | Not stated |
| PHOENIX CONTACT | CHARX SEC-3050 | 1.5.0 and earlier | Not stated |
| PHOENIX CONTACT | CHARX SEC-3100 | 1.5.0 and earlier | Not stated |
| PHOENIX CONTACT | CHARX SEC-3150 | 1.5.0 and earlier | Not stated |
| Phoenixcontact | Charx Sec-3000 Firmware | before 1.5.1 | 1.5.1 |
| Phoenixcontact | Charx Sec-3050 Firmware | before 1.5.1 | 1.5.1 |
| Phoenixcontact | Charx Sec-3100 Firmware | before 1.5.1 | 1.5.1 |
| Phoenixcontact | Charx Sec-3150 Firmware | before 1.5.1 | 1.5.1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 5.9 | Medium | CNA (cert.vde.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
An unauthenticated remote attacker can read memory out of bounds due to improper input validation in the MQTT stack. The brute force attack is not always successful because of memory randomization.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cert.vde.com/en/advisories/VDE-2024-011Third Party Advisory
Other vulnerabilities in CHARX SEC-3000
- 9.8 Critical severity
- 9.8 Critical severity
- 7.5 High severity
- 7.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 8.4 High severity
- 7.5 High severity
- 7.8 High severity
- 8.4 High severity
- 7.5 High severity
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