CVE-2024-34882: Insufficiently protected credentials in SMTP server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote ad

Routine

MEDIUM 4.9DOWNGRADE

CVE-2024-34882 is a medium-severity flaw (CVSS 4.9) affecting bitrix24. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficiently protected credentials in SMTP server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote administrators to send SMTP account passwords to an arbitrary server via HTTP POST request.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-522
Published	2024-11-04
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: bitrix24

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-04 18:15 UTCPublished CVE record published
2026-07-05 01:19 UTCUpdated Record last modified

bitrix24 bitrix24 DOWNGRADE

Affected: 23.300.100

Fixed in: no fixed release known

Safe to downgrade to: a release before 23.300.100

1. Check installed version

apt-cache policy bitrix24 || rpm -q bitrix24 || bitrix24 --version

2. No fixed release: DOWNGRADE to a release before 23.300.100 (Debian / Ubuntu)

apt-cache madison bitrix24 sudo apt install bitrix24=<VERSION_BEFORE_23.300.100> sudo apt-mark hold bitrix24

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bitrix24 sudo dnf downgrade bitrix24-<VERSION_BEFORE_23.300.100> sudo dnf versionlock add bitrix24

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-34882?

bitrix24: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-34882 being exploited?

CVE-2024-34882 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-34882 affect?

CVE-2024-34882 affects bitrix24. Severity is medium (CVSS 4.9). Insufficiently protected credentials in SMTP server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote administrators to send SMTP account passwords to an arbitrary server via HTTP POST request.

How urgent is CVE-2024-34882?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2024-34891 MEDIUM 6.8 DOWNGRADE Insufficiently protected credentials in DAV server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote adm
CVE-2024-34887 MEDIUM 4.9 DOWNGRADE Insufficiently protected credentials in AD/LDAP server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote
CVE-2024-34885 MEDIUM 6.8 DOWNGRADE Insufficiently protected credentials in SMTP server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote ad
CVE-2024-34883 MEDIUM 4.9 DOWNGRADE Insufficiently protected credentials in DAV server settings in 1C-Bitrix Bitrix24 23.300.100 allow remote admi

References

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