CVE-2017-7245 [High] | Memory Corruption in Pcre

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 4) or possibly have unspecified other impact via a crafted file.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-28	0.25%	0.44%	+0.18%
2	2026-03-17	0.44%	0.25%	-0.18%
3	2025-11-21	—	0.44%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-28

0.25%

0.44%

+0.18%

2026-03-17

0.44%

0.25%

-0.18%

2025-11-21

—

0.44%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.0	HIGH	`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. 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:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. 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.	1.8	5.9	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/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: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:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.0

HIGH

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.

1.8

5.9

[email protected]

6.8

2.0

MEDIUM

AV:N/AC:M/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: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:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

OS Trackers for CVE-2017-7245

vendor	priority	summary	link
`debian`	unimportant	CVE-2017-7245 unimportant priority: Debian including 1 source packages (pcre3), 2 status rows across 2 suites (bookworm, bullseye): open 2.	https://security-tracker.debian.org/tracker/CVE-2017-7245
`gentoo`	normal	CVE-2017-7245: 1 GLSA(s) (201710-25), 1 atom(s) (dev-libs/libpcre); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-7245
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2017-7245
`suse`	low	CVE-2017-7245 severity low: SUSE including 309 source package names (24.324:libpcre1-8.45-8.7.1, 26.374:libpcre1-8.45-8.7.1, …), 746 product×package rows across 111 product lines (Container suse/ltss/sle12.5/sles12sp5, Container suse/sles12sp3, … (111 product lines)): Fixed 358, Known Not Affected 231, Known Affected 157.	https://www.suse.com/security/cve/CVE-2017-7245/
`ubuntu`	negligible	CVE-2017-7245 negligible priority: Ubuntu including 1 source packages (pcre3), 12 status rows across 12 suites (artful, bionic, cosmic, disco, eoan, focal, precise, trusty, upstream, xenial, yakkety, zesty): ignored 6, not-affected 5, needs-triage 1.	https://ubuntu.com/security/CVE-2017-7245

Affected software / configurations for CVE-2017-7245

Vendor	Product	Version	Raw CPE
pcre	pcre	8.40	cpe:2.3:a:pcre:pcre:8.40:::::::*

References for CVE-2017-7245

URL	Tags
http://www.securityfocus.com/bid/97067	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:2486
https://blogs.gentoo.org/ago/2017/03/20/libpcre-two-stack-based-buffer-overflow-write-in-pcre32_copy_substring-pcre_get-c/	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201710-25

URL

CVE-2017-7245

Exploit prediction scoring system (EPSS) score for CVE-2017-7245

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7245

Weakness enumeration for CVE-2017-7245

OS Trackers for CVE-2017-7245

Affected software / configurations for CVE-2017-7245

References for CVE-2017-7245