CVE-2019-15544

Uncontrolled memory consumption in protobuf

7.5 HighFix available

An issue was discovered in the protobuf crate before 2.6.0 for Rust. Attackers can exhaust all memory via Vec::reserve calls.

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

3.76%Up 3.3 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

An issue was discovered in the protobuf crate before 2.6.0 for Rust. Attackers can exhaust all memory via Vec::reserve calls.

Record: CVE-2019-15544
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-770
Updated: 2026-11-02

CVE List No score

An issue was discovered in the protobuf crate before 2.6.0 for Rust. Attackers can exhaust all memory via Vec::reserve calls.

Record: CVE-2019-15544
Updated: 2026-11-02

EUVDEUVD-2021-1801 No score

An issue was discovered in the protobuf crate before 2.6.0 for Rust. Attackers can exhaust all memory via Vec::reserve calls.

Record: EUVD-2021-1801
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mh6h-f25p-98f8 7.5

Uncontrolled memory consumption in protobuf

Affected versions of this crate called Vec::reserve() on user-supplied input. This allows an attacker to cause an Out of Memory condition while calling the vulnerable method on untrusted data.

Record: GHSA-mh6h-f25p-98f8
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-770
Updated: 2026-11-02

OSV 7.5

An issue was discovered in the protobuf crate before 2.6.0 for Rust. Attackers can exhaust all memory via Vec::reserve calls.

Record: CVE-2019-15544
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVGHSA-mh6h-f25p-98f8 7.5

Uncontrolled memory consumption in protobuf

Affected versions of this crate called Vec::reserve() on user-supplied input. This allows an attacker to cause an Out of Memory condition while calling the vulnerable method on untrusted data.

Record: GHSA-mh6h-f25p-98f8
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-770
Updated: 2026-11-02

OSVRUSTSEC-2019-0003 7.5

Out of Memory in stream::read_raw_bytes_into()

Affected versions of this crate called Vec::reserve() on user-supplied input.

This allows an attacker to cause an Out of Memory condition while calling the vulnerable method on untrusted data.

Record: RUSTSEC-2019-0003
CVSS 3.1: 7.5 HighCVSS: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

Affected packages
Package	Affected	Fixed
`protobuf` crates.io	before 2.6.0	2.6.0
`protobuf` crates.io	0.0.0-0 up to 1.7.5, 2.0.0-0 up to 2.6.0	1.7.52.6.0

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-15544 is a high vulnerability (CVSS 7.5) in Apache Hbase, published June 8, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.76%, the 89th percentile. Fixed in protobuf 2.6.0.

References

Show 8 moreShow less