CVE-2018-1262 [High] | Privilege Escalation in Cloud Foundry Uaa

Cloud Foundry Foundation UAA, versions 4.12.X and 4.13.X, introduced a feature which could allow privilege escalation across identity zones for clients performing offline validation. A zone administrator could configure their zone to issue tokens which impersonate another zone, granting up to admin privileges in the impersonated zone for clients performing offline token validation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.43%	1.34%	+0.91%
2	2025-03-30	0.33%	0.43%	+0.10%
3	2025-03-29	—	0.33%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.43%

1.34%

+0.91%

2025-03-30

0.33%

0.43%

+0.10%

2025-03-29

—

0.33%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.2	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:H/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:H) They need powerful rights—admin, root, or similar—before this pays off. 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.	1.2	5.9	[email protected]
6.5	2.0	MEDIUM	`AV:N/AC:L/Au:S/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:S) A single authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.2

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:H/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:H): They need powerful rights—admin, root, or similar—before this pays off.
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.

1.2

5.9

[email protected]

6.5

2.0

MEDIUM

AV:N/AC:L/Au:S/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:S): A single authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.0

6.4

[email protected]

Affected software / configurations for CVE-2018-1262

Vendor	Product	Version	Raw CPE
pivotal_software	cloud_foundry_uaa	4.12.0	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.12.0:::::::*
pivotal_software	cloud_foundry_uaa	4.12.1	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.12.1:::::::*
pivotal_software	cloud_foundry_uaa	4.12.2	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.12.2:::::::*
pivotal_software	cloud_foundry_uaa	4.13.0	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.13.0:::::::*
pivotal_software	cloud_foundry_uaa	4.13.1	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.13.1:::::::*
pivotal_software	cloud_foundry_uaa	4.13.2	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.13.2:::::::*
pivotal_software	cloud_foundry_uaa	4.13.3	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.13.3:::::::*
pivotal_software	cloud_foundry_uaa	4.13.4	cpe:2.3:a:pivotal_software:cloud_foundry_uaa:4.13.4:::::::*
pivotal_software	cloud_foundry_uaa-release	57	cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:57:::::::*
pivotal_software	cloud_foundry_uaa-release	57.1	cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:57.1:::::::*
pivotal_software	cloud_foundry_uaa-release	58	cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:58:::::::*
cloudfoundry	cf-deployment	>= 1.27.0, <= 1.31.0	cpe:2.3:a:cloudfoundry:cf-deployment::::::::

References for CVE-2018-1262

URL	Tags
https://www.cloudfoundry.org/blog/cve-2018-1262/	Third Party Advisory

URL

CVE-2018-1262

Exploit prediction scoring system (EPSS) score for CVE-2018-1262

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1262

Weakness enumeration for CVE-2018-1262

GitHub Security Advisory for CVE-2018-1262

Affected software / configurations for CVE-2018-1262

References for CVE-2018-1262