CVE-2023-41627Known exploitationNetwork attack vector

Message-route manipulation via unauthenticated routing tables

Published Sep 1, 2023 · Updated Aug 2, 2024

Source validation failure in O-RAN Software Community ric-plt-lib-rmr 4.9.0 allows remote attackers to alter message routes via forged tables. The dynamic route-table update thread accepts a table delivered over its control TCP listener and applies it without verifying that the sender is the Route Manager. Network reachability to the control listener is sufficient; accepted tables can redirect RMR traffic to attacker-selected endpoints without user interaction.

CVSS severity7.5
High
EPSS probability1.44%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Source validation failure in O-RAN Software Community ric-plt-lib-rmr 4.9.0 allows remote attackers to alter message routes via forged tables. The dynamic route-table update thread accepts a table delivered over its control TCP listener and applies it without verifying that the sender is the Route Manager. Network reachability to the control listener is sufficient; accepted tables can redirect RMR traffic to attacker-selected endpoints without user interaction.

The record

CVE
CVE-2023-41627
Published
Sep 1, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

T1565.002Transmitted Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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