CVE-2019-25001
Out of bounds write in serde_cbor
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
- Record
CVE-2019-25001- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
- Record
CVE-2019-25001- Updated
- 2026-11-02
EUVDEUVD-2021-1940 No score
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
- Record
EUVD-2021-1940- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xr7r-88qv-q7hm
Out of bounds write in serde_cbor
Affected versions of this crate did not properly check if semantic tags were nested excessively during deserialization. This allows an attacker to craft small (< 1 kB) CBOR documents that cause a stack overflow. The flaw was corrected by limiting the allowed number of nested tags.
- Record
GHSA-xr7r-88qv-q7hm- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
- Record
CVE-2019-25001- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-xr7r-88qv-q7hm
Out of bounds write in serde_cbor
Affected versions of this crate did not properly check if semantic tags were nested excessively during deserialization. This allows an attacker to craft small (< 1 kB) CBOR documents that cause a stack overflow. The flaw was corrected by limiting the allowed number of nested tags.
- Record
GHSA-xr7r-88qv-q7hm- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVRUSTSEC-2019-0025
Flaw in CBOR deserializer allows stack overflow
Affected versions of this crate did not properly check if semantic tags were nested excessively during deserialization.
This allows an attacker to craft small (< 1 kB) CBOR documents that cause a stack overflow.
The flaw was corrected by limiting the allowed number of nested tags.
- Record
RUSTSEC-2019-0025- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-25001
An issue was discovered in the serde_cbor crate before 0.10.2 for Rust. The CBOR deserializer can cause stack consumption via nested semantic tags.
- Record
UBUNTU-CVE-2019-25001- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
serde_cborcrates.io |
before 0.10.2 | 0.10.2 |
serde_cborcrates.io |
0.0.0-0 up to 0.10.2 | 0.10.2 |
rust-serde-cborUbuntu:22.04:LTS |
All versions, plus listed versions 0.11.1-10.11.2-1 |
None known |
rust-serde-cborUbuntu:24.04:LTS |
All versions, plus listed versions 0.11.2-1 |
None known |
rust-serde-cborUbuntu:25.10 |
All versions, plus listed versions 0.11.2-2 |
None known |
rust-serde-cborUbuntu:26.10 |
All versions, plus listed versions 0.11.2-2 |
None known |
rust-serde-cborUbuntu:26.04:LTS |
All versions, plus listed versions 0.11.2-2 |
None known |
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-2019-25001 is a high vulnerability (CVSS 7.5) in Serde Cbor Project Cbor, published October 3, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. Fixed in serde_cbor 0.10.2.