CVE-2015-7511 [Low] | Information Disclosure in Libgcrypt

CVE-2015-7511 is rated Low Risk (20.4/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.43%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.07%	0.43%	+0.36%
2	2026-05-13	0.05%	0.07%	+0.02%
3	2026-02-20	—	0.05%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.07%

0.43%

+0.36%

2026-05-13

0.05%

0.07%

+0.02%

2026-02-20

—

0.05%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
2.0	3.0	LOW	`CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N` Click to expand Attack vector (AV:P) Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. 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:L) Some sensitive info could get out, but not a total data dump. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	0.5	1.4	[email protected]
1.9	2.0	LOW	`AV:L/AC:M/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:L) Requires local access to the target system. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	3.4	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

2.0

3.0

LOW

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

Attack vector (AV:P): Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

0.5

1.4

[email protected]

1.9

2.0

LOW

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

Access vector (AV:L): Requires local access to the target system.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

3.4

2.9

[email protected]

OS Trackers for CVE-2015-7511

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2015-7511 not yet assigned priority: Debian including 1 source packages (libgcrypt20), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2015-7511
`gentoo`	normal	CVE-2015-7511: 1 GLSA(s) (201610-04), 1 atom(s) (dev-libs/libgcrypt); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-7511
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2015-7511
`suse`	medium	CVE-2015-7511 severity moderate: SUSE including 322 source package names (0.9.1:libgcrypt20-1.6.1-16.27.1, 1.0.0:libgcrypt20-1.6.1-16.27.1, …), 398 product×package rows across 84 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (84 product lines)): Fixed 241, Known Affected 157.	https://www.suse.com/security/cve/CVE-2015-7511/
`ubuntu`	medium	CVE-2015-7511 medium priority: Ubuntu including 2 source packages (libgcrypt11, libgcrypt20), 22 status rows across 11 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, wily, xenial, yakkety, zesty): DNE 10, not-affected 7, released 4, needs-triage 1.	https://ubuntu.com/security/CVE-2015-7511

Affected software / configurations for CVE-2015-7511

Vendor	Product	Version	Raw CPE
gnupg	libgcrypt	<= 1.6.4	cpe:2.3:a:gnupg:libgcrypt::::::::
debian	debian_linux	7.0	cpe:2.3:o:debian:debian_linux:7.0:::::::*
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*
canonical	ubuntu_linux	12.04	cpe:2.3:o:canonical:ubuntu_linux:12.04::::lts:::
canonical	ubuntu_linux	14.04	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
canonical	ubuntu_linux	15.10	cpe:2.3:o:canonical:ubuntu_linux:15.10:::::::*

References for CVE-2015-7511

URL	Tags
http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
http://www.cs.tau.ac.IL/~tromer/ecdh/
http://www.debian.org/security/2016/dsa-3474
http://www.debian.org/security/2016/dsa-3478
http://www.securityfocus.com/bid/83253
http://www.ubuntu.com/usn/USN-2896-1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html	Vendor Advisory
https://security.gentoo.org/glsa/201610-04

URL

CVE-2015-7511

Exploit prediction scoring system (EPSS) score for CVE-2015-7511

Common vulnerability scoring system (CVSS) metrics for CVE-2015-7511

Weakness enumeration for CVE-2015-7511

OS Trackers for CVE-2015-7511

Affected software / configurations for CVE-2015-7511

References for CVE-2015-7511