How severe is CVE-2023-40997?

CVE-2023-40997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-40997 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40997?

CVE-2023-40997 affects O-ran-sc Ric Message Router. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40997?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-40997 published?

CVE-2023-40997 was published on 2023-08-28 and last updated on 2026-06-17.

CVE-2023-40997

CVE-2023-40997 is a high-severity vulnerability in O-ran-sc Ric Message Router with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: O-ran-sc Ric Message Router
Published: 2023-08-28
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in O-RAN Software Community ric-plt-lib-rmr v.4.9.0 allows a remote attacker to cause a denial of service via a crafted packet.

Frequently asked questions

What is CVE-2023-40997?: Buffer Overflow vulnerability in O-RAN Software Community ric-plt-lib-rmr v.4.9.0 allows a remote attacker to cause a denial of service via a crafted packet.
How severe is CVE-2023-40997?: CVE-2023-40997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-40997 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40997?: CVE-2023-40997 affects O-ran-sc Ric Message Router. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40997?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-40997 published?: CVE-2023-40997 was published on 2023-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:o-ran-sc:ric_message_router:4.9.0:*:*:*:*:*:*:*

More vulnerabilities in O-ran-sc Ric Message Router

CVE-2023-41627 — High (CVSS 7.5): O-RAN Software Community ric-plt-lib-rmr v4.9.0 does not validate the source of the routing tables it receives,…
CVE-2023-40998 — High (CVSS 7.5): Buffer Overflow vulnerability in O-RAN Software Community ric-plt-lib-rmr v.4.9.0 allows a remote attacker to cause a…

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