CVE-2022-28615 [Critical] | Integer Overflow in Http Server

CVE-2022-28615 is rated High Risk (73.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.69%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.73% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.96%	5.69%	+4.73%
2	2026-05-07	1.11%	0.96%	-0.15%
3	2026-03-04	—	1.11%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.96%

5.69%

+4.73%

2026-05-07

1.11%

0.96%

-0.15%

2026-03-04

—

1.11%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.1	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H) Serious risk that confidential data gets exposed in a big 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	5.2	[email protected]
9.1	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H) Serious risk that confidential data gets exposed in a big 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	5.2	134c704f-9b21-4f2e-91b3-4a467353bcc0
6.4	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/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:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	10.0	4.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.1

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H): Serious risk that confidential data gets exposed in a big 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

5.2

[email protected]

9.1

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H): Serious risk that confidential data gets exposed in a big 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

5.2

134c704f-9b21-4f2e-91b3-4a467353bcc0

6.4

2.0

MEDIUM

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

10.0

4.9

[email protected]

OS Trackers for CVE-2022-28615

vendor	priority	summary	link
`alpine`	—	CVE-2022-28615: 1 source package rows (apache2); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0.	https://security.alpinelinux.org/vuln/CVE-2022-28615
`debian`	not yet assigned	CVE-2022-28615 not yet assigned priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-28615
`gentoo`	high	CVE-2022-28615: 1 GLSA(s) (202208-20), 2 atom(s) (app-admin/apache-tools, www-servers/apache); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-28615
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2022-28615
`suse`	high	CVE-2022-28615 severity important: SUSE including 319 source package names (2.8-13.5:apache2-utils-2.4.51-150400.6.3.1, 4.3.1.9.7.1:apache2-2.4.51-150400.6.3.1, …), 658 product×package rows across 101 product lines (Container bci/php-apache, Container suse/manager/4.3/proxy-httpd, … (101 product lines)): Fixed 427, Known Affected 231.	https://www.suse.com/security/cve/CVE-2022-28615/
`ubuntu`	medium	CVE-2022-28615 medium priority: Ubuntu including 1 source packages (apache2), 8 status rows across 8 suites (bionic, focal, impish, jammy, kinetic, trusty, upstream, xenial): released 8.	https://ubuntu.com/security/CVE-2022-28615

Affected software / configurations for CVE-2022-28615

Vendor	Product	Version	Raw CPE
apache	http_server	< 2.4.54	cpe:2.3:a:apache:http_server::::::::
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
fedoraproject	fedora	36	cpe:2.3:o:fedoraproject:fedora:36:::::::*
netapp	clustered_data_ontap	—	cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*

References for CVE-2022-28615

URL	Tags
http://www.openwall.com/lists/oss-security/2022/06/08/9	Mailing List Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/	Third Party Advisory
https://security.gentoo.org/glsa/202208-20	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220624-0005/	Third Party Advisory

URL

CVE-2022-28615 | Read beyond bounds in ap_strcmp_match()

Exploit prediction scoring system (EPSS) score for CVE-2022-28615

Common vulnerability scoring system (CVSS) metrics for CVE-2022-28615

Weakness enumeration for CVE-2022-28615

OS Trackers for CVE-2022-28615

Affected software / configurations for CVE-2022-28615

References for CVE-2022-28615