How severe is CVE-2023-24535?

CVE-2023-24535 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-2023-24535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-24535?

CVE-2023-24535 affects Protobuf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-24535?

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-2023-24535 published?

CVE-2023-24535 was published on 2023-06-08 and last updated on 2026-06-17.

CVE-2023-24535

CVE-2023-24535 is a high-severity vulnerability in Protobuf 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Protobuf
Published: 2023-06-08
Last modified: 2026-06-17

Description

Parsing invalid messages can panic. Parsing a text-format message which contains a potential number consisting of a minus sign, one or more characters of whitespace, and no further input will cause a panic.

Frequently asked questions

What is CVE-2023-24535?: Parsing invalid messages can panic. Parsing a text-format message which contains a potential number consisting of a minus sign, one or more characters of whitespace, and no further input will cause a panic.
How severe is CVE-2023-24535?: CVE-2023-24535 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-2023-24535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-24535?: CVE-2023-24535 affects Protobuf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-24535?: 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-2023-24535 published?: CVE-2023-24535 was published on 2023-06-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:protobuf:protobuf:1.29.0:*:*:*:*:go:*:*

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