CVE-2021-3530 [High] | Security Vulnerability in Binutils

CVE-2021-3530 is rated Moderate Risk (60.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.40%). EPSS rose +1.87% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.53%	2.40%	+1.87%
2	2026-05-24	0.35%	0.53%	+0.18%
3	2026-03-11	—	0.35%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.53%

2.40%

+1.87%

2026-05-24

0.35%

0.53%

+0.18%

2026-03-11

—

0.35%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:N/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:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/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:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2021-3530

vendor	priority	summary	link
`debian`	unimportant	CVE-2021-3530 unimportant priority: Debian including 1 source packages (binutils), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1.	https://security-tracker.debian.org/tracker/CVE-2021-3530
`gentoo`	normal	CVE-2021-3530: 1 GLSA(s) (202208-30), 2 atom(s) (sys-devel/binutils, sys-libs/binutils-libs); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-3530
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2021-3530
`suse`	low	CVE-2021-3530 severity low: SUSE including 151 source package names (0.23.1-12.3:binutils-2.39-150100.7.40.1, 0.23.1-12.3:libctf-nobfd0-2.39-150100.7.40.1, …), 1119 product×package rows across 307 product lines (Container bci/bci-sle15-kernel-module-devel, Container bci/gcc, … (307 product lines)): Fixed 1066, Known Not Affected 53.	https://www.suse.com/security/cve/CVE-2021-3530/
`ubuntu`	low	CVE-2021-3530 low priority: Ubuntu including 3 source packages (binutils, gdb, libiberty), 44 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 33, ignored 5, needs-triage 3, DNE 1, needed 1, released 1.	https://ubuntu.com/security/CVE-2021-3530

Affected software / configurations for CVE-2021-3530

Vendor	Product	Version	Raw CPE
gnu	binutils	2.36	cpe:2.3:a:gnu:binutils:2.36:::::::*
netapp	ontap_select_deploy_administration_utility	—	cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*

References for CVE-2021-3530

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1956423	Issue Tracking Third Party Advisory
https://security.gentoo.org/glsa/202208-30	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0006/	Third Party Advisory
https://src.fedoraproject.org/rpms/binutils/blob/rawhide/f/binutils-CVE-2021-3530.patch	Patch Third Party Advisory

URL

CVE-2021-3530

Exploit prediction scoring system (EPSS) score for CVE-2021-3530

Common vulnerability scoring system (CVSS) metrics for CVE-2021-3530

Weakness enumeration for CVE-2021-3530

OS Trackers for CVE-2021-3530

Affected software / configurations for CVE-2021-3530

References for CVE-2021-3530