CVE-2020-36513
Use of Uninitialized Resource in acc_reader.
CVE-2020-36513 is a critical vulnerability (CVSS 9.8) in Acc Reader Project Reader, published December 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.23%, the 69th percentile. No source names a fixed version.
- Severity
- 9.8 CriticalCVSS 3.1, NVD
- Exploit chance
- 1.23%EPSS, 69th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
acc_readercrates.io | through 2.0.0 | None known |
acc_readercrates.io From an advisory covering 2 CVEs | through 2.0.0 | None known |
acc_readercrates.io From an advisory covering 2 CVEs | 0.0.0-0 and later | None known |
What each source reports
NVD Score used
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.
- Record
CVE-2020-36513- 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 ListNo score
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.
- Record
CVE-2020-36513- Updated
- 2026-11-02
EUVDEUVD-2022-0499No score
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.
- Record
EUVD-2022-0499- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-799f-r78p-gq9c
Use of Uninitialized Resource in acc_reader.
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.
- Record
GHSA-799f-r78p-gq9c- 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-hv9v-7w3v-rj6fNo score
`Read` on uninitialized buffer in `fill_buf()` and `read_up_to()`
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-hv9v-7w3v-rj6f- Updated
- 2026-11-02
OSVGHSA-799f-r78p-gq9c
Use of Uninitialized Resource in acc_reader.
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. read_up_to may read from uninitialized memory locations.
- Record
GHSA-799f-r78p-gq9c- 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-p4cr-64x4-f92f
Use of Uninitialized Resource in acc_reader.
An issue was discovered in the acc_reader crate through 2020-12-27 for Rust. fill_buf may read from uninitialized memory locations.
- Record
GHSA-p4cr-64x4-f92f- 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-hv9v-7w3v-rj6fNo score
`Read` on uninitialized buffer in `fill_buf()` and `read_up_to()`
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-hv9v-7w3v-rj6f- Updated
- 2026-11-02
OSVRUSTSEC-2020-0155No score
`Read` on uninitialized buffer in `fill_buf()` and `read_up_to()`
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-2020-0155- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | ||
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
rustsec.org/advisories/RUSTSEC-2020-0155.html
raw.githubusercontent.com/rustsec/advisory-db/main/crates/acc_reader/RUSTSEC-2020-0155.md
nvd.nist.gov/vuln/detail/CVE-2020-36513
github.com/netvl/acc_reader/issues/1
crates.io/crates/acc_reader