CVE-2023-26562

In Zimbra Collaboration (ZCS) 8.8.15 and 9.0, a closed account (with 2FA and generated passwords) can send e-mail messages when configured for Imap/smtp.

Published: 2024-02-13 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-26562 is rated Low Risk (38.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.14%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-26562

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.16% 0.14% -0.02%
2 2025-11-18 0.13% 0.16% +0.02%
3 2025-04-15 — 0.13% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-26562

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N 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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N 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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-26562

Affected software / configurations for CVE-2023-26562

Vendor Product Version Raw CPE
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p13:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p14:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p15:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p16:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p17:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p18:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p19:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p2:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p20:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p21:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p22:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p23:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p24:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p25:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p26:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p27:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p28:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p29:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p3:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p30:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p31:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p32:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p33:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p34:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p35:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p36:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p4:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p5:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p6:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p7:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p8:*:*:*:*:*:*
zimbra collaboration 8.8.15 cpe:2.3:a:zimbra:collaboration:8.8.15:p9:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p0:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p16:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p19:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p20:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p21:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p23:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p24:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p24.1:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p25:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p26:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p27:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p28:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p29:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p7.1:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:*
zimbra collaboration 9.0.0 cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:*

References for CVE-2023-26562

cvelogic Threat Intelligence