CVE-2021-26308

CVE-2021-26308 is a high-severity vulnerability in Marc Project Marc 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.

Key facts

Description

An issue was discovered in the marc crate before 2.0.0 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated memory, violating soundness.

Frequently asked questions

What is CVE-2021-26308?
An issue was discovered in the marc crate before 2.0.0 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated memory, violating soundness.
How severe is CVE-2021-26308?
CVE-2021-26308 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 high, integrity none, and availability none.
Is CVE-2021-26308 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26308?
CVE-2021-26308 affects Marc Project Marc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26308?
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-2021-26308 published?
CVE-2021-26308 was published on 2021-01-29 and last updated on 2026-06-17.

References

Affected products (1)