How severe is CVE-2024-31949?

CVE-2024-31949 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-31949 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-31949?

CVE-2024-31949 affects Frrouting. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-31949?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-31949 have an EU (EUVD) identifier?

Yes. CVE-2024-31949 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-29807.

When was CVE-2024-31949 published?

CVE-2024-31949 was published on 2024-04-07 and last updated on 2026-06-17.

CVE-2024-31949

CVE-2024-31949 is a medium-severity vulnerability in Frrouting with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-29807
Weakness: CWE-835
Affected product: Frrouting
Published: 2024-04-07
Last modified: 2026-06-17

Description

In FRRouting (FRR) through 9.1, an infinite loop can occur when receiving a MP/GR capability as a dynamic capability because malformed data results in a pointer not advancing.

Frequently asked questions

What is CVE-2024-31949?: In FRRouting (FRR) through 9.1, an infinite loop can occur when receiving a MP/GR capability as a dynamic capability because malformed data results in a pointer not advancing.
How severe is CVE-2024-31949?: CVE-2024-31949 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-31949 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-31949?: CVE-2024-31949 affects Frrouting. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-31949?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-31949 have an EU (EUVD) identifier?: Yes. CVE-2024-31949 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-29807.
When was CVE-2024-31949 published?: CVE-2024-31949 was published on 2024-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*

More vulnerabilities in Frrouting

CVE-2023-38406 — Critical (CVSS 9.8): bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."
CVE-2023-41361 — Critical (CVSS 9.8): An issue was discovered in FRRouting FRR 9.0. bgpd/bgp_open.c does not check for an overly large length of the rcv…
CVE-2023-41360 — Critical (CVSS 9.1): An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c can read the initial byte of the ORF header in…
CVE-2023-41359 — Critical (CVSS 9.1): An issue was discovered in FRRouting FRR through 9.0. There is an out-of-bounds read in bgp_attr_aigp_valid in…
CVE-2022-37032 — Critical (CVSS 9.1): An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a segmentation fault and denial of…
CVE-2022-37035 — High (CVSS 8.1): An issue was discovered in bgpd in FRRouting (FRR) 8.3. In bgp_notify_send_with_data() and bgp_process_packet() in…

All CVEs affecting Frrouting →

Other CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities

CVE-2026-24816 — Critical (CVSS 10.0): Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in datavane tis…
CVE-2018-20784 — Critical (CVSS 9.8): In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a…
CVE-2017-12997 — Critical (CVSS 9.8): The LLDP parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in…
CVE-2017-12995 — Critical (CVSS 9.8): The DNS parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-domain.c:ns_print().
CVE-2017-12990 — Critical (CVSS 9.8): The ISAKMP parser in tcpdump before 4.9.2 could enter an infinite loop due to bugs in print-isakmp.c, several functions.
CVE-2026-31448 — Critical (CVSS 9.4): In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual…

Browse all CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities →