CVE-2021-45688
Use of Uninitialized Resource in ash.
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
CVE-2021-45688- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-908
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
CVE-2021-45688- Updated
- 2026-11-02
EUVDEUVD-2022-0476 No score
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
EUVD-2022-0476- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-64wv-8vwp-xgw2
Use of Uninitialized Resource in ash.
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
GHSA-64wv-8vwp-xgw2- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-908
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qj69-c89v-jwq2 No score
Reading on uninitialized memory may cause UB ( `util::read_spv()` )
Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation.
Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.
Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.
- Record
GHSA-qj69-c89v-jwq2- Updated
- 2026-11-02
OSV
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
CVE-2021-45688- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-64wv-8vwp-xgw2
Use of Uninitialized Resource in ash.
An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.
- Record
GHSA-64wv-8vwp-xgw2- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-908
- Updated
- 2026-11-02
OSVGHSA-qj69-c89v-jwq2 No score
Reading on uninitialized memory may cause UB ( `util::read_spv()` )
Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation.
Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.
Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.
- Record
GHSA-qj69-c89v-jwq2- Updated
- 2026-11-02
OSVRUSTSEC-2021-0090 No score
Reading on uninitialized memory may cause UB ( `util::read_spv()` )
Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation.
Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.
Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.
- Record
RUSTSEC-2021-0090- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-45688 is a critical vulnerability (CVSS 9.8) in Ash-rs Ash, published January 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.39%, the 72nd percentile. Fixed in ash 0.33.1.