How severe is CVE-2023-45312?

CVE-2023-45312 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-45312 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45312?

CVE-2023-45312 affects Mtproto Mt Proto Proxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45312?

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-2023-45312 published?

CVE-2023-45312 was published on 2023-10-10 and last updated on 2026-06-17.

CVE-2023-45312

CVE-2023-45312 is a high-severity vulnerability in Mtproto Mt Proto Proxy with a CVSS 3.x base score of 8.8. 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-1188.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1188
Affected product: Mtproto Mt Proto Proxy
Published: 2023-10-10
Last modified: 2026-06-17

Description

In the mtproto_proxy (aka MTProto proxy) component through 0.7.2 for Erlang, a low-privileged remote attacker can access an improperly secured default installation without authenticating and achieve remote command execution ability.

Frequently asked questions

What is CVE-2023-45312?: In the mtproto_proxy (aka MTProto proxy) component through 0.7.2 for Erlang, a low-privileged remote attacker can access an improperly secured default installation without authenticating and achieve remote command execution ability.
How severe is CVE-2023-45312?: CVE-2023-45312 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-45312 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45312?: CVE-2023-45312 affects Mtproto Mt Proto Proxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45312?: 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-2023-45312 published?: CVE-2023-45312 was published on 2023-10-10 and last updated on 2026-06-17.

References

https://medium.com/%40_sadshade/almost-2000-telegram-proxy-servers-are-potentially-vulnerable-to-rce-since-2018-742a455be16b

Affected products (1)

cpe:2.3:a:mtproto:mt_proto_proxy:*:*:*:*:*:erlang:*:*

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