CVE-2018-1000810 [Critical] | Integer Overflow in Rust

The Rust Programming Language Standard Library version 1.29.0, 1.28.0, 1.27.2, 1.27.1, 127.0, 126.2, 126.1, 126.0 contains a CWE-680: Integer Overflow to Buffer Overflow vulnerability in standard library that can result in buffer overflow. This attack appear to be exploitable via str::repeat, passed a large number, can overflow an internal buffer. This vulnerability appears to have been fixed in 1.29.1.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.62%	2.96%	+2.33%
2	2026-01-05	0.77%	0.62%	-0.14%
3	2025-11-21	—	0.77%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.62%

2.96%

+2.33%

2026-01-05

0.77%

0.62%

-0.14%

2025-11-21

—

0.77%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.0	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.0

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

7.5

2.0

HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

6.4

[email protected]

OS Trackers for CVE-2018-1000810

vendor	priority	summary	link
`alpine`	critical	CVE-2018-1000810: 1 source package rows (rust); 6 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-community, edge-main); fixed 0, open 6.	https://security.alpinelinux.org/vuln/CVE-2018-1000810
`debian`	not yet assigned	CVE-2018-1000810 not yet assigned priority: Debian including 1 source packages (rustc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2018-1000810
`gentoo`	normal	CVE-2018-1000810: 1 GLSA(s) (201812-11), 2 atom(s) (dev-lang/rust, dev-lang/rust-bin); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-1000810
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2018-1000810
`ubuntu`	medium	CVE-2018-1000810 medium priority: Ubuntu including 1 source packages (rustc), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): not-affected 5, released 1.	https://ubuntu.com/security/CVE-2018-1000810

Affected software / configurations for CVE-2018-1000810

Vendor	Product	Version	Raw CPE
rust-lang	rust	1.26.0	cpe:2.3:a:rust-lang:rust:1.26.0:::::::*
rust-lang	rust	1.26.1	cpe:2.3:a:rust-lang:rust:1.26.1:::::::*
rust-lang	rust	1.26.2	cpe:2.3:a:rust-lang:rust:1.26.2:::::::*
rust-lang	rust	1.27.0	cpe:2.3:a:rust-lang:rust:1.27.0:::::::*
rust-lang	rust	1.27.1	cpe:2.3:a:rust-lang:rust:1.27.1:::::::*
rust-lang	rust	1.27.2	cpe:2.3:a:rust-lang:rust:1.27.2:::::::*
rust-lang	rust	1.28.0	cpe:2.3:a:rust-lang:rust:1.28.0:::::::*
rust-lang	rust	1.29.0	cpe:2.3:a:rust-lang:rust:1.29.0:::::::*

References for CVE-2018-1000810

URL	Tags
https://blog.rust-lang.org/2018/09/21/Security-advisory-for-std.html	Vendor Advisory
https://groups.google.com/forum/#%21topic/rustlang-security-announcements/CmSuTm-SaU0
https://security.gentoo.org/glsa/201812-11	Third Party Advisory

URL

CVE-2018-1000810

Exploit prediction scoring system (EPSS) score for CVE-2018-1000810

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000810

Weakness enumeration for CVE-2018-1000810

OS Trackers for CVE-2018-1000810

Affected software / configurations for CVE-2018-1000810

References for CVE-2018-1000810